Chevy VIN, Block, Heads, Intake Casting Numbers

[hammerdown63]

Mortec.com one of the best sources for Chevy Small block codes is no longer up on the web. I compiled some info for myself and figured I would post it here too. RIP Mortec!

Chevy Block Casting Numbers
Use these casting numbers to identify the block you have.
Small Block Casting numbers
Casting Number Years CID Comments
330817 70-80 400 Car & Truck 2 & 4-bolt 3-freeze plugs
355909 75-79 262/305 car & Truck 2-bolt
360851 75-76 262 2-bolt
361979 76-79 305 car & Truck 2-bolt
366245 78-82 350 Bowtie High tin 4-bolt
366286 82 350 Bowtie aluminum 4-bolt siamesed
366287 82 350 Bowtie aluminum 4-bolt siamesed
366299 82 350 Bowtie aluminum 4-bolt
389257 67 302 2-bolt
391436 68-73 307 2-bolt
393288 65-67 283 2-bolt
460703 78 350 4-bolt
460776 76-79 305 Car & Truck 2-bolt
460777 76-79 305 Car & Truck 2-bolt
460778 76-79 305 2-bolt
471511 79-82 267 Car & Truck 2-bolt
3556519 58-61 283 2-bolt
3703524 55 265 car & Corvette no oil filter 2-Bolt
3720991 55-56 265 Car & Truck 2-bolt
3731548 57 283 Car & Truck 2-bolt No side mount
3737737 57-62 283 2-bolt
3737739 57-62 283 2-bolt
3756519 58-62 283 2-bolt
3782870 62-67 327 car & Truck 2-bolt
3789817 62-67 327 2-bolt
3789935 61-66 283 car & Truck 2-bolt
3790721 64-67 327 2-bolt Chevy II Nova Recessed filter
3791362 66-67 327 2-bolt Chevy II Nova Recessed filter
3791363 66-67 327 2-bolt Chevy II Nova Recessed filter
3792563 65 327 2-bolt
3792582 64-65 283 2-bolt
3794226 57-63 283 2-boltTruck
3794460 68-69 327 2-bolt
3814660 68-69 327 2-bolt
3830944 63 327 2-bolt
3834810 65-67 283 car & Truck 2-bolt
3834812 62-63 283 2-bolt
3837739 58-62 283 2-bolt
3849852 57-66 283 car & Truck 2-bolt
3849859 57-66 283 car & Truck 2-bolt
3849935 65-67 283 2-bolt
3858174 64-67 327 car & Truck 2-bolt
3858180 64-67 327 2-bolt
3858618 68-76 350 2 & 4-Bolt
3862194 65-67 283 2-bolt Chevy II Nova Recessed filter
3864812 62-67 283 car & Truck 2-bolt
3892657 64-67 302/327/350 car & Truck 2-bolt
3892659 68-69 327 2-bolt Large journal
3896944 67 283 2-bolt
3896948 66-67 283 2-bolt
3903352 67 327 2-bolt
3914635 68-73 307 car & Truck 2-bolt
3914636 68-73 307 car & Truck 2-bolt
3914638 68 327 2-bolt
3914653 68 307 2-bolt
3914660 68-69 327 car & Truck 2-bolt
3914678 68-79 302/327/350 car & Truck 2-bolt
3931174 68 307 2-bolt Truck
3932371 69-73 307 car & Truck 2-bolt
3932373 69-73 307 car & Truck 2-bolt
3932386 68-74 302-327-350 2 & 4-Bolt
3932388 68-79 350 car & Truck 4-Bolt
3932442 67 350 2-bolt Camaro
3933180 68-69 327 car & Truck Large journal 2-Bolt
3951509 70-80 400 car & Truck 2 & 4-Bolt 2-freeze plugs
3951511 70-80 400 car & Truck 2 & 4-Bolt 3-freeze plugs
3956618 68-79 302/327/350 2 & 4-Bolt
3956632 69-73 307 car & Truck 2-bolt
3959512 62-63 327 2-bolt
3970010 69-79 302/350 car & Truck 2 & 4-Bolt Most common
3970014 68-79 350 car & Truck 2 & 4-Bolt
3970020 69-73 307 car & Truck 2-bolt
3970024 69-73 307 car & Truck 2-bolt
3992386 68-69 327 car & Truck Large journal 2-Bolt
10036033 350 4-bolt Mexico cast Crate engine
10051182 350 Car and Truck 2 & 4-bolt 1 Piece Seal Passenger stick
10051184 86-up 350 Car & Truck 2 & 4-bolt Passenger stick 1-piece seal
10054727 86-up 350 Car & Truck 2-bolt Passenger stick 1-piece seal
10066036 86-up 350 Car & Truck 2 & 4-bolt Passenger stick 1-piece seal
10066038 350 2 & 4-Bolt Mexico cast Crate engine
10090511 90 350 4-bolt LT-5 ZR-1
10125327 93-up 350 Camaro/firebird 2 & 4-bolt LT-1 Reverse cooling Roller cam
10134996 400 4-bolt Bowtie Aluminum 400 Mains/Bore
10153558 91-92 350 4-bolt LT-5 ZR-1
10168588 94-96 265 2-bolt LT-1 Reverse cooling
10199001 93-95 350 4-bolt LT-5 ZR-1
10243878 96-up 305 2-bolt Vortec Roller
10243880 96-up 350 2 & 4-Bolt Vortec Roller
12550592 97-up 350 Crossbolted LS-1 Aluminum
12551364 98 & UP 365 Gen III 6.0L Iron Block. LQ-4 and LQ-9
12559378 97-up 350 Crossbolted LS-1 Aluminum
12559846 97-up 350 Crossbolted LS-1 Aluminum
12560621 97-up 350 Crossbolted LS-1 Aluminum
12560629 97-up 350 Crossbolted LS-1 Aluminum
12561168 97-up 350 Crossbolted LS-1 Aluminum
12561358 99 & UP 293/325 Gen III 4.8L and 5.3L Iron Block.
12562174 97-up 350 Crossbolted LS-1 Aluminum
12573581 98 & UP 365 Gen III 6.0L Iron Block. LQ-4 and LQ-9
12577184 98 & UP 365 Gen III 6.0L Iron Block. LQ-4 and LQ-9
14010201 80-85 305 car & Truck 2-bolt Passenger stick
14010202 80-85 305 car & Truck 2-bolt Passenger stick
14010203 80-85 305 car & Truck 2-bolt Passenger stick
14010205 80-82 267 car & Truck 2-bolt Passenger stick
14010207 80-85 350 car & Truck 2 & 4-Bolt Passenger stick
14010209 80-85 350 car & Truck 2 & 4-Bolt Passenger stick
14010280 80-82 267 car & Truck 2-bolt Passenger stick
14010287 80-82 350 2-bolt Passenger stick
14011064 80-85 350 4-bolt Passenger stick
14011148 87-89 350 2 & 4-Bolt Roller cam one piece seal
14016376 80-82 267 2-bolt Passenger stick
14016379 77-79 350 2 & 4-Bolt
14016379 77-79 267 2-bolt dipstick in pan
14016381 76-85 305 car & Truck 2-bolt Passenger stick After 79
14016382 80-85 305 2-bolt Passenger stick
14016383 80-85 305 2-bolt Truck
14079287 86-90 350 2-bolt Passenger stick one piece seal
14088526 87-89 350 2-bolt Roller cam Passenger stick 1-piece seal
14088548 86-88 350 2-bolt Truck Passenger stick 1-piece seal
14088551 86-88 305 Car & Truck 2-bolt Passenger stick 1-piece seal
14093627 87-88 305 Car & Truck 2-bolt Passenger stick 1-piece seal
14093638 87-95 350 Car & Truck 2 & 4-bolt Passenger stick 1-piece seal
14094766 86-up 305 2-bolt Passenger stick one piece seal
14101147 86-up 305 2-bolt Passenger stick one piece seal
14101148 86-up 350 2 & 4-Bolt Passenger stick 1-Piece seal Roller cam
14102058 86-88 305 Car & Truck 2-bolt Passenger stick 1-piece seal
14316379 68-88 350 Car & Truck 2-bolt Passenger stick 1-piece seal

Block Casting numbers
Casting Number Years CID Comments
340220 72-76 427 Truck Tall deck
345014 74-86 454 Truck
346236 74-76 454 2-bolt
359070 74-90 454 Truck
361959 73-85 454 Car & Truck
364776 68-84 427 Truck Tall deck
364779 68-88 366 Truck Tall deck
399204 70-71 509 4-Bolt Aluminum Can-AM
399289 73-79 454 2-bolt
399293 77-78 366 Truck
473478 68-84 427 Truck Tall deck
3716362 396
3732755 59-61 348
3732811 58 348
3751872 58 348
3755011 59-61 348
3771705 59-61 348
3782012 58-61 348
3782870 68-76 427 Truck Tall deck
3788068 62 409
3795623 61 409
3798962 62-65 348 Truck
3815707 58-61 348
3824553 66-67 366 Truck
3830814 63 409
3839752 62-63 409
3839754 65 409
3844422 64 409
3855961 66-67 396 2-bolt
3855962 65-66 396 4-Bolt
3855977 65-67 366 Truck Tall deck
3857651 409 Marine
3857655 62-65 348 Truck
3857656 65 409
3857658 409 Marine
3860386 62-64 409
3860387 58 348
3869942 66-67 427 2 & 4-Bolt
3873858 66 396 4-Bolt
3902406 67 396 2 & 4-Bolt
3902466 65-67 396
3904351 67 427 2 & 4-Bolt
3904354 66-67 366 Truck Tall deck
3916319 68-85 366 Truck Tall deck
3916321 68 427 2 & 4-Bolt
3916323 68 396 2 & 4-Bolt
3918319 66-70 366 Truck
3925521 68-85 366 Truck Tall deck
3935439 68-69 427 2 & 4-Bolt
3935440 68-69 396 2 & 4-Bolt
3937724 68-85 366 Truck Tall deck
3937726 68-84 427 Truck Tall deck
3946052 69 427 ZL-I Aluminum 4-Bolt
3946053 97 427 ZL-I Aluminum 4-Bolt 2nd design
3955270 69 427 2 & 4-Bolt
3955272 69 396/402 2 & 4-Bolt
3955274 68-85 366 Truck Tall deck
3955276 68-84 427 Truck Tall deck
3963512 69-71 427/454 2 & 4-Bolt COPO
3963513 73-76 454
3965440 68-69 396
3965449 68-72 396
3969852 68-84 366 Truck
3969854 69-72 396/402/454 2 & 4-Bolt
3969858 68-84 427 Truck Tall deck
3995623 61 409
3999289 72-78 454 Car & Truck 2-Bolt
3999290 72 402 2-bolt
3999293 68-85 366 Truck Tall deck
3999294 68-84 427 Truck Tall deck
6272176 68-76 366 Truck
6272177 72 402 2-bolt
6272181 73-76 427 Truck
10051107 454 4-Bolt Bowtie IV Short deck
10068286 90-91 454 4-Bolt IV Short deck
10069284 427 Truck
10114182 91-95 454 4-Bolt Gen-5
10114183 91-95 366 Truck Gen-5
10114184 91-95 427 Truck Gen-5
10134366 454 4-Bolt Gen-5 Bowtie Tall deck
10185050 454 4-Bolt Gen-5 Bowtie Short deck
10237297 96-up 454 4-Bolt Vortec 7400 Gen-6
10237300 96-up 502 4-Bolt 4.466 bore Gen-6
12550313 91-95 454 4-Bolt Gen-5
12556110 01-up 496 4-Bolt Vortec 8100 Gen-7
14015445 75-90 454 Car & Truck
14015543 87-90 454 4-Bolt Gen-5
14044807 454 4-Bolt IV Bowtie Tall deck
14096859 502 4-Bolt Gen-5
24502504 454 4-Bolt Gen-5 Bowtie Short deck
24502572 4-Bolt DRCE-2 Olds "9.5"" deck"

[hammerdown63]

Crankshaft Identification
Use these casting numbers to identify the crankshaft you have.
Small Block Casting numbers
Casting Number CID Years Journals Stroke Comments
1130 307/327 68-73 2.45/2.10 3.25 Nodular Iron
1178 302 2.45/2.10 3 Forged
1181 305/350 68-76 2.45/2.10 3.48 Nodular Iron
1182 350 2.45/2.10 3.48 Forged
2680 327 2.30/2.00 3.25 Forged
2690 350 2.45/2.10 3.48 Forged
3279 302 68-69 2.45/2.10 3 Forged
4577 327 62-67 2.3/2.0 3.25 Nodular Iron
4672 307/327 68-73 2.45/2.10 3.25 Nodular Iron
310514 350 77-85 2.45/2.10 3.48 Nodular Iron
330550 350 73-75 2.45/2.10 3.48 Forged
354431 262 75-76 2.45/2.10 3.1 Nodular Iron
3727449 283 57-67 2.3/2.0 3 Forged
3729449 265 55-57 2.3/2.0 3 Forged
3734627 327 62-67 2.3/2.0 3 Forged
3735236 265/283 55-67 2.3/2.0 3 Forged
3735263 283 57-63 2.3/2.0 3 Forged
3782680 327 62-67 2.3/2.0 3.25 Forged
3814671 327 2.30/2.00 3.25 Forged
3815822 265/283 55-67 2.3/2.0 3 Forged
3835236 283 57-65 2.3/2.0 3 Forged
3836266 265/283 56-63 2.3/2.0 3 Forged
3849847 283 57-67 2.3/2.0 3 Forged
3876764 283 64-67 2.3/2.0 3 Nodular Iron
3876768 283 64-67 2.3/2.0 3 Nodular Iron
3884577 327 2.30/2.00 3.25 Forged
3892690 350 68-85 2.45/2.10 3.48 Forged
3911001 307/327 68-73 2.45/2.10 3.25 Nodular Iron
3911011 307/327 68-73 2.45/2.10 3.25 Nodular Iron
3914672 327 2.45/2.10 3.25 Forged
3923279 302 2.45/2.10 3 Forged
3932442 305/350 69-85 2.45/2.10 3.48 Nodular Iron
3941174 307/327 68-73 2.45/2.10 3.25 Nodular Iron
3941178 302 68-69 2.45/2.10 3 Forged
3941182 350 68-76 2.45/2.10 3.48 Forged
3941188 350 2.45/2.10 3.48 Forged
3949847 283 64-67 2.3/2.0 3 Nodular Iron
3951130 327 2.45/2.10 3.25 Forged
3951529 400 70-80 2.65/2.10 3.75 Nodular Iron
10106122 350 90-95 2.76/2.10 3.66 Forged LT-5 ZR-1
10168568 265 2.45/2.10 3 Cast One Piece Seal
12552216 346 2.558/2.10 3.62 Cast LS-1 One Piece Seal
14088526 305 1986 2.45/2.10 3.48 Nodular Iron One piece seal
14088532 350 86-88 2.45/2.10 3.48 Forged One piece seal
14088535 305/350 86 & UP 2.45/2.10 3.48 Nodular Iron One piece seal
14088552 350 86 & UP 2.45/2.10 3.48 Forged One piece seal

Big Block Crankshaft
Casting Number CID Years Journals Stroke Comments
3520 454 2.75/2.20 4 Forged
3521 454 70-88 2.75/2.20 4 Forged LS-6
3524 454 2.75/2.20 4 Forged
6223 366/396/402/427 68-76 2.75/2.20 3.76 Forged
7115 366/396/402/427 65-76 2.75/2.20 3.76 Forged
7416 454 70-88 2.75/2.20 4 Forged
7463 454 2.75/2.20 4 Forged
336782 454 2.75/2.20 4 Cast
353039 454 70-88 2.75/2.20 4 Nodular Iron
353638 454 2.75/2.20 4
359730 454 2.75/2.20 4
3732692 348 2.75/2.20 4
3732692 348 1958 2.50/2.20 3.25 Forged
3733223 409 62-65 2.50/2.20 3.5 Forged
3733223 348 2.50/2.20 3.25 Forged
3733226 348 2.50/2.20 3.25 Forged
3733226 348 1958 2.50/2.20 3.25 Forged
3741640 348 2.50/2.20 3.25 Forged
3741640 348 59-61 2.50/2.20 3.25 Forged
3741642 348 2.50/2.20 3.25 Forged
3741642 348 59-61 2.50/2.20 3.25 Forged
3788072 409 1961 2.50/2.20 3.5 Forged
3788072 409 2.50/2.20 3.5 Forged
3795589 409 61-62 2.50/2.20 3.5 Forged
3795589 409 2.50/2.20 3.5 Forged
3804816 366/396/402/427 61-76 2.75/2.20 3.76 Nodular Iron
3815822 348 58-61 2.50/2.20 3.25 Forged
3815822 348 2.50/2.20 3.25 Forged
3824553 348 58-61 2.50/2.20 3.25 Forged
3824553 348 2.50/2.20 3.25 Forged
3829027 409 2.50/2.20 3.5 Forged
3829027 409 1963 2.50/2.20 3.5 Forged
3837466 409/427 2.50/2.20 3.65 Forged Z-11Special performance
3837466 409 1963 2.50/2.20 3.5 Forged Z-11
3838416 409 64-65 2.50/2.20 3.5 Forged
3838416 409 2.50/2.20 3.5 Forged
3856223 396/402 65-71 2.75/2.20 3.76 Nodular Iron
3863114 402 2.75/2.20 3.76
3863144 366/396/402 68-85 2.75/2.20 3.76 Forged
3874874 366/396/402/427 66-85 2.75/2.20 3.76 Forged
3879621 427 2.75/2.20 3.76 Forged
3882841 396 2.75/2.20 3.76 Forged
3882842 366/396/427 2.75/2.20 3.76 Forged
3882849 366/396/427 2.75/2.20 3.76 Forged
3887114 396 2.75/2.20 3.76 Forged Special performance
3904815 366/396/402/427 65-76 2.75/2.20 3.76 Nodular Iron
3962523 454 2.75/2.20 4 Forged
3963521 454 2.75/2.20 4 Forged Special performance
3963524 454 70-72 2.75/2.20 4 Forged
3965746 NA NA NA Semi finished Forged crank
3965753 NA NA NA Semi finished Forged
3967416 454 70-71 2.75/2.20 4 Forged
3967463 454 70-88 2.75/2.20 4 Forged
3975495 454 2.75/2.20 4
3975945 454 2.75/2.20 4
3993804 NA NA NA Raw Forged crank
3993878 454 2.75/2.20 4 Forged
10051169 NA NA NA Raw Forged
10114186 427 2.75/2.20 3.76 Forged
10114187 396 2.75/2.20 3.76 Cast
10114188 454 2.75/2.20 4 Cast One Piece Seal
14097044 454/502 2.75/2.20 4 Forged One Piece Seal

[hammerdown63]

Cylinder Head ID
Use these casting numbers to identify the heads you have.
Small Block Casting numbers
Casting Number CID Years Valves Comments
10065202 350 82-86 1.94/1.50 76cc
10065203 350 82-86 1.94/1.50 76cc
10065204 350 82-86 1.94/1.50 76cc
10065205 305 82-86 1.84/1.50 58cc
10065206 350 82-86 1.94/1.50 76cc
10065207 305 82-86 1.84/1.50 58cc
10088113 350 86-92 1.94/1.50 58cc Corvette Aluminum
10120928 350 87-94 1.94/1.50 76cc
10125320 350 94-96 2.00/1.55 Gen II LT1 cast iron version,
10128374 350 92-97 2.00/1.55 Gen II LT1 53 CC angle plug aluminum
10134363 Bowtie High Port 60 CC 210 ~ 258 CC
10159550 350 87-94 1.94/1.50 76cc
10159551 305 87-94 1.84/1.50 58cc
10159552 350 87-94 1.94/1.50 76cc
10159553 305 87-94 1.84/1.50 58cc
10185040 Splayed vavle head 45 CC angle plug
10205245 350 93 2.00/1.55 Gen II LT1 angle plug aluminum reverse flow cooling 175/68cc ports
10207643 350 94-97 2.00/1.55 Gen II LT1 angle plug aluminum reverse flow cooling 175/68cc ports
10208890 265 94-96 2.00/1.55 Gen II L99 4.3 Liter V-8, cast iron, reverse flow
10215339 346 97 2.00/1.55 Gen III LS1 aluminum 68cc
10239906 305/350 96-up 1.94/1.50 68cc Vortec
12367713 2.00/1.55 GM Fast burn 62 CC 210 CC intake runner angle plug Vortec
12480005 346 0 2.125/1.625 Gen III LS1 "GTZ" aluminum 38cc angle plug
12480011 SB2.2 head 48 ~ 54 CC angle plug 284 CC intake runner Bare heads.
12480034 2.02/1.60 Bowtie Phase III 64cc Angle plug 184 cc intake runner
12506450 350 87-94 1.94/1.50 76cc
12509859 305 87-94 1.84/1.50 58cc
12516852 350 87-94 1.94/1.50 76cc
12551561 350 96 2.00/1.55 Gen II LT1 angle plug aluminum reverse flow cooling
12552520 305 97-99 1.84/1.5 Vortec Truck L-35
12554290 350 94-96 2.00/1.55 Gen II LT1 cast iron version
12555690 350 96 2.00/1.55 Gen II LT-4 55 CC 195 CC intake runner Angle Plug
12555690 350 96 2.00/1.55 Gen II LT-4 55 CC 195 CC intake runner Angle Plug
12556743 325 99 & UP 2.00/1.55 Gen III 5.3L aluminum truck and van
12558059 305 97 1.84/1.5 L-35 Vortec truck
12558062 350 98 1.94/1.5 L-31 Vortec truck 64cc chambers 170cc intake port
12558062 305/350 96-up 1.94/1.50 68cc Vortec
12558806 346 97-98 2.00/1.55 Gen III LS1 aluminum 68cc
12559853 346 99 & UP 2.00/1.55 Gen III LS1 aluminum 68cc
12559895 325 00 & UP 2.00/1.55 Gen III 5.3L aluminum
12564241 346 00 & UP 2.00/1.55 Gen III LS1 aluminum 68cc
12564243 346 2 2.00/1.55 Gen III LS6 aluminum 68cc
12564243 346 2.00/1.55 Gen III LS-6 vette head 65 CC
14008856 267 79-81 1.71/1.50
14010201 305 82-85 1.84/1.50 58cc
14011034 350 80-up 2.02/1.60 64cc Bowtie
14011049 350 82-up 2.02/1.60 64cc Bowtie Aluminum
14014415 267/305 80-85 1.71/1.50 64cc Crack prone
14014416 267/305/350 80-86 1.84/1.50 64cc Crack prone
14019821 350 80-86 1.84/1.50 76cc
14019924 267 79-81 1.71/1.50
14019926 305 80-86 1.84/1.50
14020516 305/350 80-86 1.84/1.50
14020517 350 80-86 1.84/1.50 76cc
14020555 305 81
14020556 350 81
14022206 350 80 1.94/1.50 76cc
14022301 305 80-86 1.84/1.50 58cc
14022601 267/305 79-86 1.72/1.50 1.84/1.50 58cc
14022801 305 80-86 1.72/1.50 58cc
14034806 267 78-82 1.72/1.50
14034807 305 78-82 1.72/1.50
14034808 350 80-86 1.84/1.50 76cc
14034810 350 80-86
14034811 350 80-86
14039121 305 81-86
14039122 305 81-86
14071114 350 80-86
14075381 350 80-86
14079261 350 82-85
14085844 350 80-86
14089119 350 80-86
14096217 350 90-up 1.94/1.50 64cc Crate heads
14101081 305 87-94 1.84/1.50 58cc
14101083 350 88-94 1.94/1.50 64 cc
14102187 305 87-95 1.84/1.50 58cc
14102191 305/350 87-95 1.84/1.50
14102193 305/350 87-95 1.84/1.50
24502559 96-97 Bowtie SB2 1st design"mirror ports" aluminum
25534351C 2.00/1.55 Vortec Bowtie 65 CC 175 cc intake runner
25534371C 2.00/1.55 Vortec Bowtie 65 CC 206 cc intake runner
3238882 350 68-69 1.94/1.50 76cc
3297185 307/327/350 57-67 1.72/1.50
330545 350/400 71-75 2.02/1.60 76cc
330862 400 71-73 1.94/1.50
333881 350 71-76 2.02/1.60 76cc
333882 350/400 70-80 1.94/1.50 76cc
340292 350 73-80 2.02/1.60 64cc Angle plugs turbo' head No heat riser
354434 262/305 75-80 1.72/1.50 60cc
358741 262/305 71--79 1.72/1.50
359944 350 71-79 1.94/1.50 76cc
3636839 265 55 1.72/1.50
3703523 265 55 1.72/1.50 195HP
3713358 265 55-56 1.72/1.50
3713569 265 55-56 1.72/1.50
3725306 265 56 1.72/1.50 210HP Corvette
3731262 265 56 1.72/1.50 Dual Quad Corvette
3731539 283 57-66 1.72/1.50 283HP Corvette
3731544 265/283 55-61 1.72/1.50 Dual Quad Corvette
3731554 265/283 55-63 1.72/1.50
3731556 283 57 1.72/1.50
3731762 265 56 1.72/1.50 Dual Quad Corvette
3737775 283/327 62-67 1.72/1.50
3740997 283 57 1.72/1.50 Dual Quad FI & 4-brl 220-270HP
3743056 283 58 1.72/1.50
3743096 327 62-67 1.72/1.50
3747363 265 57-62 1.72/1.50
3748056 327 62-67 1.72/1.50
3748720 283 57-58 1.72/1.50 Dual Quad FI & 4-brl Corvette
3748770 283 55-62 1.72/1.50 Dual Quad FI & 4-brl Corvette
3748772 283 57-62 1.72/1.50 Dual Quad FI & 4-brl Corvette
3755537 283 57-62 1.72/1.50
3755538 283 59 1.72/1.50 250-290HP FI Corvette

[hammerdown63]

3755539 283 58-62 1.72/1.50
3755549 283 57-62 1.72/1.50
3755550 283 57-62 1.72/1.50 Dual Quad FI & 4-brl Corvette
3755585 327 62-67 1.72/1.50
3755896 283 62-64 1.72/1.50
3760116 283 59 1.72/1.50 Dual Quad FI & 4-brl Corvette
376445 350 80-84 1.72/1.50
376450 262/305 75-76 1.72/1.50
376495 350 Jun-79 1.94/1.50 76cc
3767460 265/283/327 55-67 1.72/1.50 Car & Truck Corvette
3767462 327 62-67 1.72/1.50
3767465 283 60-61 1.72/1.50 Dual Quad FI & 4-brl Corvette
3767754 283 60-61 1.72/1.50
3767792 283 60-67 1.72/1.50
3770126 327/350 67-70 1.94/1.50
3773012 265 55 1.72/1.50
3774634 327 64-67 1.72/1.50
3774682 283/327 60-67 1.72/1.50
3774684 283/327 57-67 1.72/1.50
3774690 283 58 1.72/1.50 FI Corvette
3774692 283 58-64 1.72/1.50 Dual Quad FI & 4-brl Corvette
3782461 302/327/350 61-70 1.94/1.50 Dual Quad FI & 4-brl Corvette 2.02/1.60 Doubble humps 64cc
3782462 327 67 1.94/1.50 Corvette 2.02/1.60
3792563 327 65-67
3795896 283/307/327 58-72 1.72/1.50 60cc
3796896 283 64-67 1.72/1.50 60cc Chevy II
3798996 327 63-67
3814462 350 67 1.94/1.50
3814480 283/327 60-67 1.72/1.50
3814482 327 62-67 1.72/1.50
3817680 283 59 1.72/1.50 FI 4-brl
3817681 327 62-67 1.72/1.50
3817682 283 61-62 1.72/1.50
3836839 265 55 1.72/1.50
3836842 283/327 57-67 1.72/1.50
3836924 283 63-64 1.72/1.50
3836942 283 58-62 1.72/1.50
3837063 283 58-62 1.72/1.50
3837064 265/283 56-62 1.72/1.50
3837065 265 55-56 1.72/1.50
3837775 283/327 62-67 1.72/1.50
383882 400 71-73
3848720 283 57-58 1.72/1.50
3849820 327 65 1.72/1.50
3854520 283/327 62-67 1.72/1.50
3867802 283 57-60 1.72/1.50 FI Corvette
3873064 265 56-57 1.72/1.50
3876487 350 71-73 1.94/1.50 76cc
3876775 283/327 57-67 1.72/1.50 76cc
3878775 327 64-67 1.72/1.50
3884520 283/327 60-67 1.72/1.50 60cc
3890462 302/327/350 62-68 1.94/1.50 2.02/1.60 64cc Doubble humps
3891462 302/327/350 62-67 1.94/1.50 2.02/1.60 64cc
3891492 327 64-67 1.94/1.50
3911011 327 68
3911032 307/327 68-70 1.72/1.50 70cc
3912264 283 58-62 1.72/1.50
3912265 283 63-64 1.72/1.50
3912291 302/327/350 68-70 1.94/1.50 2.02/1.60 64ccDoubble humps
3912311 350 67 1.94/1.50
3912313 327 65-73 1.72/1.50
3917264 302 67 2.02/1.60 64cc Z-28
3917290 327 68-70 1.72/1.50
3917291 302/327/350 62-69 1.94/1.50 2.02/1.60 64cc Doubble humps
3917292 327 67-68 1.94/1.50
3917293 307/327 68-69 1.72/1.50 76cc
3921175 327 66 1.94/1.50
3923441 350 67-76 1.94/1.50 76cc
3927185 307/327/350 68-79 1.72/1.50 70cc
3927186 302/327/350 68-72 1.94/1.50 2.02/1.60 64cc Doubble humps Bolt holes
3927187 302/350 69-70 2.02/1.60 64cc Corvette
3927188 307/327/350 69 1.72/1.50 76cc
3928454 307 68 1.72/1.50
3928455 302/327 68 2.02/1.60 64cc 325 & 350HP
3928494 327 68 2.02/1.60 64cc 350HP 4-brl
3928495 327 68 1.72/1.50
3931633 307 68-73 1.72/1.50
3931635 350 68-76 1.94/1.50 76cc
3931637 327 68-69
3931638 327 68 1.72/1.50
3931639 302 68 2.02/1.60 64cc
3932441 327/350 67-79 1.94/1.50 76cc
3932454 307/350 68-799 1.72/1.50 76cc
3933148 350 68-73 76cc
3941174 327 68 1.72/1.50
3946812 350 69 1.72/1.50
3946813 350 69-79 76cc
3947014 350 68-70
3947040 302/327/350 68-70 1.94/1.50 2.02/1.60 64cc
3947041 302/327/350 68-79 1.94/1.50 2.02/1.60 64cc
3951598 400 70-71 1.94/1.50 76cc
3961598 400 70-76 1.94/1.50 76cc
3964286 350 68-77 1.94/1.50 76cc
3970126 327/350 67-79 1.72/1.50
3973195 400 71-73 1.94/1.50 76cc
3973414 327/350 64-70 2.02/1.60 64cc Z-28 LT-1 corvette
3973487 350 68-79 1.94/1.50 2.02/1.60 76cc
3973487X 350 68-73 1.94/1.50 2.02/1.60 76cc X cast 10cc's
3973493 400 70-76 1.94/1.50 76cc
3986316 350 71-72 2.02/1.60 76cc
3986330 350 69-79 1.94/1.50 76cc
3986339 307/350 68-79 1.72/1.50 76cc
3986388 350 68-79 1.72/1.50 76cc
3990941 307/350 68-82
3991492 327/350 68-73 1.94/1.50 2.02/1.60 64cc Angle plug
399380 400 70-73 76cc
3997417 307 71 1.72/1.50
3998916 350/400 72-75 2.02/1.60 76cc
3998920 350 72-75 1.94/1.50 76cc
3998991 307/350 68-79 1.72/1.50 76cc
3998993 307/350 68-79 1.71/1.50 1.94/1.50 76cc
3998997 350/400 71-73 1.94/1.50 76cc
426424 305/350/400 72-82 1.72/1.50
458624 350 69-84 1.94/1.50 76cc
460703 350 78-80 1.94/1.50 76cc
462614 305/350 77-79 1.72/1.50
462624 350 76-87 1.94/1.50 2.02/1.60 76cc Crack prone
464033 350 76-86 1.94/1.50 76cc
464036 350 76-86 1.94/1.50 76cc
468642 350/400 75-84 1.72/1.50
471513 267 79-81 1.72/1.50
472424 305 76-79 1.72/1.50
474213 305 78-82 1.72/1.50
474214 350 78-82 1.94/1.50 76cc
475590 400 78-82 1.94/1.50 76cc
517513 267 79-81 1.72/1.50
6259515 350 73
6260855 350 73-75 1.94/1.50 76cc
6260856 350 73-76 1.94/1.50 76cc
6272070 350 73
10045427 Pontiac/Chevy Aluminum, 91cc chamber Large Rectangle Port
10049875 Pontiac/Chevy Aluminum Small Rectangle port
10051128 454 90-94 2.19/1.88 72cc Bowtie Aluminum Rectangular port 400cc intake
10052902 427 Oval Port Open chamber
10101136 454 91-94 2.06/1.77 Open chamber Oval port
10101140 366/427 91-01 Oval Port Closed chamber
10114156 454 91-01 Oval Port Open chamber
10121033 454 78-88 2.06/1.77 Open chamber Oval port
10141279 454 96-01 Vortec 7400 100cc chambers Oval Port
10487052 366 77-90 Oval Port Open chamber
12352783 454 79-93 2.06/1.77 Open chamber Oval port
12363391 Oval Port Bowtie Aluminum Signature Series
12363401 Rectangle Port Bowtie Aluminum Signature Series
12558162 496 01 & UP Gen.VII Vortec 8100 8.1L truck
12560241 454 98-01 Vortec 7400 100cc chambers Oval Port
12562932 454/502 91-95 Oval Port truck crate motor 118cc chambers
12562934 502 00 & UP GenVI Marine
14011077 454 89-94 2.19/1.88 118cc Replacement Aluminum Rectangular port 295cc intake
14025175 454 83-93 2.06/1.77 Open chamber Oval port
14044861 454 89-94 2.19/1.88 106cc Bowtie Aluminum Rectangular port 380cc intake
14081044 454 86-90 2.06/1.77 Open chamber Oval port
14081045 454 78-87 Oval Port Open chamber
14081052 366/427/454 85-87 Oval Port Open chamber
14092359 427 86-89 2.06/1.77 Open chamber Oval port
14092360 454 85-89 2.06/1.77 Open chamber Oval port
14096188 454 87-94 2.19/1.88 118cc Replacement Rectangular port 325cc intake
14097088 502 89-date 2.19/1.88 118cc Replacement Rectangular port 325cc intake GEN V
14101398 454 86-90 2.06/1.77 Open chamber Oval port
24502585 Olds/Chevy DRCE 2 Pro Stock aluminum
330864 366/427/454 70-81 2.06/1.77 Open chamber Oval port
330865 366/427/454 70-84 2.06/1.77 Open chamber Oval port
330866 366/427 68-78 Oval Port Open chamber
330867 427 68-73 Oval Port Open chamber
336768 427 73-76 Oval Port Open chamber
336781 454 73-85 2.06/1.77 113cc Oval port
343771 366/427/454 68-85 2.06/1.77 Open chamber Oval port
343772 366/427/454 76-84 2.06/1.77 Open chamber Oval port
343783 454 75-78 2.06/1.77 Open chamber Oval port
346236 454 75-87 2.06/1.77 113cc Oval port
346238 454 75-87 2.06/1.77 113cc Oval port
352625 454 70-76 Oval Port Open chamber
353049 454 70-73 2.06/1.77 113cc Oval port
366765 427/454 73-84 2.06/1.77 Open chamber Oval port
3732791 348 58
3758379 348 59-61
3759256 348 58
3767738 348 59-61
3781147 348 60-61 High Perf
3795586 409 61 360HP
3814690 409 62-64 High Perf
3819333 348/409 62-65
3830817 409 63-65 340HP
3837731 409 63 High Perf Z-11
3852583 409 65 400HP
3856206 396 65-66 2.06/1.77 98cc Oval port
3856208 396 65 2.06/1.77 109cc Z-16/L-37 Rectangular port
3856213 366 66-70 2.06/1.77 Closed chamber Oval port
3856260 396 68 Oval Port Closed chamber
3872702 396/427 66 2.06/1.77 98cc Oval port L-34/L-35/L-36
3873858 396/427 66-67 2.06/1.77 109cc L-78/L-72 Rectangular port
3876875 427 66-70 2.06/1.77 Closed chamber Oval port
3904390 396/427 66-67 2.06/1.77 98cc Oval port L-34/L-35/L-36
3904391 396/427 65-67 2.06/1.77 107cc L-78/L-71/L-72 Rectangular port
3904392 427 67 2.19/1.88 106cc L-88/L-89 Aluminum Rectangular port
3904393 366 66-68 2.06/1.77 Closed chamber Oval port
3908952 427 67 Oval Port Open chamber
3909802 396/427 66-67 2.06/1.77 100cc Oval port L-34/L-35/L-36/L-68
3917215 396/427 67-69 2.06/1.77 100cc Oval port L-34/L-35
3917219 366/427 66-70 2.06/1.77 Closed chamber Oval port
3919840 396/427 67-69 2.06/1.77 107cc L-78/L-71/L-72 Rectangular port
3919842 396/427 68-69 2.19/1.88 106cc L-88/L-89 Aluminum Rectangular port
3931063 396/427 69-70 2.06/1.77 100cc Oval port L-34/L-35
3933148 366/396/427 69 2.06/1.77 122cc Oval port
3933149 427 69-70 2.06/1.77 122cc Oval port
3935401 427 68-76 Oval Port Open chamber
3946074 396/454 69-71 2.19/1.88 118cc L-88/ZL-1 Aluminum Rectangular port
3964280 427/454 66-70 2.06/1.77 Closed chamber Oval port
3964290 396/402/427/454 69-70 2.06/1.77 100cc Oval port
3964291 396/402/427/454 69-70 2.19/1.88 108cc L-78/L-71/L-72/LS-6 Rectangular port 325cc intake
3964292 454 70 2.19/1.88 109cc LS-6 Rectangular port
3965198 396 69 2.06/1.77 Open chamber Oval port
3975950 366/427 68-70 2.06/1.77 Closed chamber Oval port
3986133 366/427 70-85 2.06/1.77 Closed chamber Oval port
3986136 366/427 70-84 2.06/1.77 Closed chamber Oval port
3993820 402/454 71 2.06/1.77 113cc Oval port
3994025 454 71 2.19/1.88 118cc LS-6 Rectangular port
3994026 454 71 2.19/1.88 118cc LS-6 Rectangular port
3999241 402/454 72 2.06/1.77 113cc Oval port
473328 366 68-85 2.06/1.77 Open chamber Oval port
6258723 454 71 2.19/1.88 118cc LS-6 Rectangular port
6272292 402/454 71 2.06/1.77 Open chamber Oval port
6272990 454 71-94 2.19/1.88 118cc Replacement Rectangular port 325cc intake

[hammerdown63]

Use these casting numbers to identify the exhaust manifolds you have.
Casting Number Years Engine Side Comments
336706 74-78 350 RH
336707 74-78 350 LH
336708 74-78 350 RH
336709 74-78 350 RH Camaro & Z-28 with A.I.R.
336710 74-78 307, 350 & 400 LH Chevelle, Camaro, Z-28, Nova and Passenger with A.I.R.
346222 74-80 307, 350 & 400 RH Chevelle, Camaro, Nova and Passenger with A.I.R.
346247 75-77 262, 350 & 400 LH Chevelle, Camaro, Monte Carlo and Passenger 110, 145, 155 & 175 HP
346248 75-77 262, 350 & 400 RH Chevelle, Camaro, Monte Carlo and Passenger 110, 145, 155 & 175 HP
354432 75-76 262 RH 110 HP
354433 75-76 262 LH 110 HP
364753 76-80 307, 350 & 400 LH Camaro, Monte Carlo, Malibu and Passenger
372243 74-83 307, 350 & 400 RH Corvette and Replacement manifold
462697 77-79 267 & 305 LH Monte Carlo and Malibu
462698 77-83 267 & 305 RH Monte Carlo and Malibu
474008 78-82 267, 305 & 350 RH
745994 80-86 267 & 305 LH
3704791 55-56 265 LH Corvette and Passenger 195 HP
3704792 55-56 265 RH Corvette and Passenger 195 HP
3725563 56 265 LH & RH Corvette and Passenger 210 HP 2-Bolt Flange
3731557 56 265 LH Corvette and Passenger 225 HP
3731558 56 265 RH Corvette and Passenger 225 HP
3732498 58 283 RH Corvette FI
3733975 57 283 LH Corvette and Passenger 220, 245, 250, 270 & 283 HP
3733976 57 283 RH Corvette and Passenger 220, 245, 250, 270 & 283 HP
3737902 62-65 327 RH 300, 340, 360, 365 & 375 HP 2.5" Outlet
3746563 65 327 LH 300 HP
3747038 58-65 283 & 327 RH Corvette and Passenger 220, 250 & 300 HP 1.9" Outlet
3747042 58-68 283, 307 & 327 RH Corvette and Passenger 195, 200, 220, 250, 270, 275, 290, 300 & 350 HP 1.9" Outlet
3747938 64 327 LH & RH 250 & 300 HP
3747942 65 327 LH & RH 250, 350 & 365 HP
3749965 58-63 283 & 327 LH Corvette and Passenger 230, 245, 250, 270, 275, 290, 300 & 315 HP
3750556 58-65 283 & 327 RH Corvette and Passenger 230, 245, 250, 270, 275, 290, 300 & 315 HP
3780728 64-67 327 LH Chevy II
3790729 64-67 283 & 327 LH 195, 220, 250, 270, 275, 300 & 350 HP 2.0" Outlet Chevy II
3790730 64-65 283 & 327 RH 220, 250 & 300 HP 1.9" Outlet Chevy II
3791162 65-66 283 & 327 RH Chevy II with AC
3791182 66-67 283 & 327 RH Passenger with AC
3797901 62-63 327 LH Corvette 300, 340 & 360 HP
3797902 62-65 327 RH Corvette 300, 340, 360, 365 & 375 HP 2.5" Outlet
3797942 63-65 327 LH & RH Corvette 300, 360, 365 & 375 HP 2.5" Outlet
3834947 64-68 283, 307 & 327 LH Chevelle 195, 200, 210, 220, 250, 275, 295, 300, 325, 350 & 365 HP 2.0" Outlet
3836968 55-56 265 RH Corvette and Passenger 195 HP
3837069 55 265 LH Corvette and Passenger 195 HP
3840715 64 283 & 327 LH Chevelle
3840912 64-68 283, 307, 327 & 350 RH Chevelle, Camaro and Nova 195, 200, 210, 220, 250, 275, 295, 300, 325, 350 & 365 HP 1.9" Outlet
3846559 64-71 327 & 350 LH Corvette 250, 270, 300 & 350 HP 2.0" Outlet
3846563 64-65 327 LH Corvette 300, 350 & 365 HP 2.5" Outlet
3846659 66 327 LH 350 HP
3849288 64-67 283 & 327 RH 195, 220, 275 & 350 HP 1.9" Outlet Chevy II
3849290 64-67 283 & 327 RH 195, 220, 275 & 350 HP 1.9" Outlet Chevy II with AC
3855163 65-68 283, 307 & 327 LH Passenger and Truck 195, 200, 220, 250 & 275 HP 2.0" Outlet
3872723 66-67 283 & 327 LH 195, 220, 275 & 350 HP 2.0" Outlet Chevy II A.I.R.
3872729 66 283 & 327 LH Chevelle 195,220, 275 & 350 HP 2.0" Outlet A.I.R.
3872730 66-68 283, 302, 307 & 327 RH Chevelle, Camaro & Z-28 200, 210, 220, 250, 275, 290, 325 & 350 HP 1.9" Outlet A.I.R.
3872738 66-67 283 & 327 RH 195, 220, 275 & 350 HP 1.9" Outlet Chevy II
3872741 66-68 283, 307 & 327 LH Passenger 195, 200, 220, 250 & 275 HP 2.0" Outlet A.I.R.
3872765 67-71 327 & 350 LH Corvette 300, 330, 350 & 370 HP 2.0" Outlet A.I.R.
3872778 66-68 283, 307 & 327 RH Corvette, Passenger and Truck 195, 200, 250, 275, 300 & 350 HP 1.9" Outlet A.I.R.
3887186 66 283 RH 220 HP 1.9" Outlet
3890424 64-67 283 & 327 RH Chevy II
3892679 66-68 283, 302, 307, 327 & 350 LH Chevelle, Camaro and Z-28 195, 200, 210, 220, 250, 275, 290, 295 & 325 HP 2.0" Outlet
3892683 66-68 283, 302, 307, 327 & 350 LH Chevelle, Camaro and Z-28 195, 200, 210, 220, 250, 275, 290, 295 & 325 HP 2.0" Outlet
3893604 66-68 283 & 327 RH Passenger A.I.R.
3893608 67-68 283, 302, 307, 327 & 350 RH Chevelle, Camaro and Z-28 195, 200, 210, 250, 275, 290, 295 & 325 HP 1.9" Outlet
3896956 67-68 283 & 327 RH Truck
3905364 69-72 307, 350 & 400 RH Truck
3932376 69-70 307, 327, 350 & 400 RH Chevelle and Camaro 200, 210, 250, 255, 265 & 300 HP 1.9" Outlet
3932461 69-74 327 & 350 LH & RH Corvette 190, 195, 200, 235, 255, 300, 330 & 350 HP 1.9" Outlet A.I.R.
3932465 69-70 327, 350 & 400 RH Passenger 235, 250, 255, 265, 300 & 350 HP 1.9" Outlet
3932469 69-70 327 & 350 LH Passenger 235, 250, 255 & 300 HP 2.0" Outlet
3932473 69-70 327, 350 & 400 LH Passenger 235, 250, 255, 265 & 300 HP 2.0" Outlet
3932481 69 350 RH Corvette
3940972 67 350 RH Camaro 295 HP
3942527 69-70 302, 307, 327 & 350 LH Chevelle, Camaro, Z-28 and Nova 200, 210, 250, 255, 290, 300 & 360 HP 2.0" Outlet A.I.R.
3942529 69-70 302, 307, 327, 350 & 400 LH Chevelle, Camaro and Nova 200, 210, 250, 255, 290 & 300 HP 2.0" Outlet
3946826 69-70 302, 307, 327 & 350 RH Chevelle, Camaro, Z-28 and Nova200, 210, 250, 255, 290, 300 & 360 HP 1.9" Outlet A.I.R.
3959562 72-74 307, 350 & 400 RH Chevelle, Camaro and Z-28 115, 130, 145, 150, 160, 165, 170, 175, 180, 185 & 245 HP 2.0" Outlet A.I.R.
3973432 70-74 307, 350 & 400 RH Chevelle, Camaro, Nova and Passenger 115, 130, 150, 165, 170, 175, 180, 200, 245, 250, 255, 270 & 300 HP 2.0" Outlet
3986330 69-73 302, 307, 327 & 350 RH Camaro and Z-28 200, 210, 245, 250, 255, 290, 300, 330 & 360 HP 1.9" Outlet A.I.R.
3989036 71-75 350 LH & RH Corvette and Passenger 165, 195, 200, 205 & 270 HP 2.0" Outlet with and without A.I.R.
3989041 69-74 302, 307, 327, 350 & 400 LH Camaro, Z-28 and Nova 115, 130, 145, 150, 160, 165, 170, 180, 185, 200, 210, 245, 250, 255, 290, 300, 330 & 360 HP 2.0" Outlet with and without A.I.R.
3989043 70-73 307, 350 & 400 LH Chevelle, Camaro, Nova and Passenger 105, 115, 130, 145, 150, 165, 175, 185, 200, 245, 250, 255, 270 & 300 HP 2.0" Outlet with and without A.I.R.
3989055 69-72 307, 350 & 400 LH
3997742 71-78 307 & 350 RH 2.0" Outlet
3998902 72-78 307 & 350 RH
10045315 88-94 305 & 350 LH
10045317 88-94 305 & 350 LH
10045317 88-94 305 & 350 LH
10046123 87-92 305 & 350 LH
10046139 84-85 350 LH
10046140 84-85 350 RH
10055734 87-91 350 RH
10092901 89-91 350 LH
10092903 89-94 350 LH
10092905 89-94 350 LH
10108437 87-93 305 & 350 RH
10128448 91-93 305 & 350 LH
10128483 91-93 305 & 350 LH
10166144 91-94 350 RH
10166145 87-90 305 & 350 LH
10166147 89-94 305 & 350 LH
10166158 89-94 305 & 350 RH
10168494 94 265 & 350 LH
10207656 93-94 350 LH
10207657 93 350 RH
10433037 82-86 305 LH
12550621 94 265 RH
12550622 91 350 RH
14007400 80-86 267 & 305 LH
14014437 80-84 305 LH
14014438 80-84 305 RH
14014459 81-86 305 & 350 LH
14014500 79-86 267, 305 & 350 RH
14022625 80-81 305 LH
14031361 82-86 305 RH
14031376 81-86 350 RH
14034069 81-86 350 RH
14034075 81-86 305 & 350 LH
14043373 82-86 305 LH
14050233 83-86 305 & 350 LH
14050282 83-87 305 & 350 RH
14050287 82-86 305 LH
14057029 84-85 350 LH
14057030 84-85 350 RH
14060630 81-86 350 RH
14060633 81-86 305 & 350 LH
14067365 77-86 267, 305, 350 & 400 LH
14068667 85-88 350 LH
14068670 85-88 350 RH
14071200 83-86 305 RH
14075611 83-86 305 LH
14079295 85-86 305 & 350 LH
14079296 85-86 305 & 350 RH
14087511 86-91 350 LH
14087512 86-91 350 RH
14093653 87-90 305 & 350 LH
14093654 87-90 305 & 350 RH
14093655 87-90 305 & 350 LH
14093658 88-94 305 & 350 RH
14093660 87-90 305 & 350 RH
14093682 87-90 305 & 350 RH
14094045 87-90 305 & 350 LH
14094063 87-92 305 & 350 LH
14094064 87-92 305 & 350 RH
14094065 85-88 350 RH
14101054 87-88 305 & 350 RH
14102016 88-94 305 & 350 RH
14102018 89-94 305 & 350 RH
14103206 87-91 305 & 350 RH
14103207 87-91 305 & 350 LH
329225 73-76 454 LH Chevelle and Passenger with and without A.I.R.
353028 73-76 454 LH Chevelle and Passenger with and without A.I.R.
353030 73-76 454 LH Police
3732793 58-61 348 LH Passenger
3732794 58-61 348 RH Passenger
3767583 59-61 348 & 409 LH Passenger
3767584 59-61 348 & 409 RH Passenger
3814682 62-64 409 RH Passenger
3814683 62-64 409 LH Passenger
3822925 62-64 409 LH Passenger & Z-11
3822926 62-64 409 RH Passenger & Z-11
3855161 65 409 LH Passenger 340 & 400 HP
3855162 65 409 RH Passenger 340 & 400 HP
3856297 65 396 LH 325 HP
3856301 65 396 LH 425 HP Corvette
3856302 65 396 RH 425 HP Corvette
3856306 65 396 RH Passenger 325 HP
3857297 65 396 LH Passenger 325 HP
3868874 65-66 396 RH Chevelle 325, 360 & 375 HP Z-16
3869925 65 396 LH Chevelle 375 HP Z-16
3872770 66 396 RH
3880827 66-69 427 & 454 LH Corvette
3880828 66-72 427 & 454 RH Corvette 270, 365, 390 & 425 HP with and without A.I.R. LS-5 & LS-6
3880869 70-72 454 LH Corvette 365 & 425 HP with and without A.I.R. LS-5 & LS-6
3883827 66 427 LH Passenger
3883828 66 427 RH Passenger
3883999 66 396 LH Chevelle 325, 360 & 375 HP
3884504 66-67 396 & 427 RH Passenger 325, 385 & 390 HP
3892307 66-67 396 & 427 LH Passenger 325 & 390 HP
3902401 67 396 LH Chevelle
3904399 66 396 LH
3909879 67-70 396, 427 & 454 LH Chevelle, Camaro and Nova 325, 350, 375, 425, 430 & 450 HP LS-6 COPO
3909880 67 396 RH Chevelle and Camaro 325, 350 & 375 HP
3914613 68-70 396 & 427 LH Passenger 265, 325, 335, 345, 390 & 425 HP
3916178 68-70 396, 427 & 454 RH Chevelle, Camaro, Nova and Passenger 325, 350, 375, 425, 430 & 450 HP COPO LS-5 & LS-6
3969869 70-74 454 LH Corvette 270, 365 & 390 HP with and without A.I.R. LS-5
3989310 71-72 402 & 454 RH Chevelle, Camaro, Monte Carlo and Passenger
3989343 71-72 402 & 454 LH Chevelle, Camaro, Monte Carlo and Passenger
3994045 73-75 454 LH Police

[hammerdown63]

Chevy Intake Manifolds
Use these numbers to identify your stock Chevy intake.
Casting Number CID Years Type Comments
10051103 350 1990 4-Brl Aluminum Bowtie Single plane
10066013 350 87-89 TPI Corvette Base MASS air 9th injector style Aluminum heads (86 and older)
10077151 305/350 90-92 TPI Plenum Speed density type
10086016 305/350 90-92 TPI Base Speed density type (87 & UP intake bolt pattern)
10108630 350 92-97 MFI LT-1
12550631 350 96 MFI LT-4 Power coated red
12552138 265 93-96 MFI L-99 (lt-1 style 4.3L V-8)
14007374 305 79-82 2-Brl Aluminum
14014432 350 1981 4-Brl Aluminum Quadrajet Z-28
14057053 305/350 80-88 4-Brl Aluminum Quadrajet
14081006 350 87-89 TPI Corvette Plenum MASS air 9th injector style
14096242 350 1990 4-Brl Holley High rise Bowtie
340261 350/400 74-76 4-Brl Quadrajet
340266 305/350/400 73-82 2-Brl
340281 305/350 82-85 4-Brl Quadrajet
346249 305/350/400 75-77 4-Brl Quadrajet
346250 305/350 76-82 4-Brl Quadrajet
346260 267/305/350 73-77 2-Brl
355943 262 1975 2-Brl
3704790 265 1955 2-Brl
3711348 265 1955 4-Brl WCFB
3728725 265 1956 Dual Quad Aluminum
3731394 283 56-57 Dual Quad Aluminum
3731398 283 1957 4-Brl WCFB
3732690 265/283 56-57 2-Brl
3732880 265/283 56-57 2-Brl
3735444 265 1956 2-Brl
3735448 265 1956 4-Brl WCFB
373598 305 78-81 2-Brl Aluminum
3737109 265 1956 4-Brl WCFB
3739653 283 58-61 Dual Quad Aluminum
3741193 283 1957 Fuel Injection Aluminum
3746826 265/283 56-63 2-Brl
3746829 283/327 58-64 4-Brl WCFB
3753809 283 59-62 2-Brl
3783244 327 62-63 4-Brl WCFB
3794129 327 1963 4-Brl Aluminum
3795397 327 1962 4-Brl Aluminum
3799349 327 62-64 4-Brl Carter AFB
3826810 327 63-65 Fuel Injection Aluminum
3837109 265/283 56-57 4-Brl WCFB
3840905 283 64-65 2-Brl
3844457 283/327 64-65 4-Brl WCFB
3844459 327 63-65 4-Brl Carter AFB
3844461 327 64-65 4-Brl Aluminum
3866922 283/327 62-65 4-Brl WCFB
3872783 283/327 66-67 4-Brl Holley
3872788 238/327 66-67 4-Brl Holley
3875954 327 1966 4-Brl Carter AFB
3877652 283/327 65-67 2-Brl
3882858 283 1966 4-Brl Carter AFB
3890490 327 66-67 4-Brl Aluminum
3905393 327/350 1967 4-Brl Quadrajet
3910601 327 67-68 2-Brl
3916313 307/327/350/400 69-70 2-Brl
3917610 302 67-68 4-Brl Aluminum
3919801 307/327 1968 2-Brl
3919803 327/350 67-68 4-Brl Quadrajet
3927183 307/327 69-70 2-Brl
3927184 350 1969 4-Brl Quadrajet
3932472 302/350 69-70 4-Brl Aluminum
3941126 302 68-69 Cross Ram Aluminum base
3941130 302 68-69 Cross Ram Aluminum top plate
3958622 307/327 69-70 2-Brl
3958626 350 69-70 2-Brl
3959594 350 71-72 4-Brl Aluminum
3965577 350 1970 4-Brl Quadrajet
3972110 350 1970 4-Brl Aluminum
3972114 350 70-72 4-Brl Aluminum
3972116 350 1970 4-Brl Aluminum Service replacement part
3972361 350 1971 4-Brl Aluminum
3973465 307 69-71 2-Brl
3973467 350/400 1971 2-Brl
3973469 350 1971 4-Brl Quadrajet
3987361 350 69-70 4-Brl Quadrajet
3990948 350 1971 2-Brl
3991004 350 1973 4-Brl Quadrajet
3991005 307 1971 2-Brl
3997770 350 1973 4-Brl Quadrajet
3997771 350 1973 4-Brl Quadrajet
3997772 350 1973 2-Brl
3997773 350/400 1973 2-Brl
458520 305/350 77-82 4-Brl Quadrajet
458520 305/350 82-87 4-Brl Aluminum
6262928 307 1972 2-Brl
6262930 350 1972 4-Brl Quadrajet
6262936 307 1972 2-Brl
6263751 350 1972 4-Brl Quadrajet
6263752 350/400 1972 2-Brl
626932 350 71-72 4-Brl Quadrajet
6271060 307 1973 2-Brl
6271061 307 1973 2-Brl
7014360 283 1957 Rochester FI
7014520 283 1957 Rochester FI
7014800 283 57-58 Rochester FI
7014800R 283 1985 Rochester FI
7014900 283 1958 Rochester FI
7014900R 283 1958-59 Rochester FI
7014960 283 1958 Rochester FI
7017200 283 59-61 Rochester FI
7017250 283 59-61 Rochester FI
7017300 283 59-60 Rochester FI
7017300R 283 1959 Rochester FI
7017310 283 60-61 Rochester FI
7017320 283 1960 Rochester FI
7017355 327 1962 Rochester FI
7017360 327 1962 Rochester FI
7017375 327 1963 Rochester FI
7017375R 327 1964 Rochester FI
7017380 327 64-65 Rochester FI
336789 454 74 Q-jet Oval port
346242 454 75 Q-jet Oval port
353015 454 73 Q-jet Oval port
3732757 348 58-62 4-Brl
3749948 348 58-61 Three duce
3753748 348 60-61 Dual quad Aluminum
3760436 348 58-59 4-Brl
3767579 348/409 61 4-Brl
3770084 348 58-59 4-Brl
3772265 348 60-61 4-Brl
3780540 348 58-59 4-Brl Aluminum
3797775 348 59-60 4-Brl
3797776 409 61 4-Brl
3813678 409 62-63 4-Brl
3814881 409 62-64 Dual quad Aluminum
3830623 409 63 Dual quad Aluminum Z-11
3830831 409 63 4-Brl 340HP
3844463 409 64-65 4-Brl 400HP
3844464 409 64-65 4-Brl 340HP
3844472 348/409 62-65 4-Brl
3856289 396 65-66 Q-jet Oval port L-35
3866948 396/427 66-67 Holley Oval port L-34/L-35
3866963 396 65 Holley Rectangular port Aluminum L-37
3883984 396/427 66-68 Q-jet Oval port L-35/L-36
3885069 396/427 66-68 Holley Rectangular port Aluminum L-78/L-72
3886093 427 67 Holley Rectangular port Aluminum L-88
3894374 427 67 Three duce Rectangular port Aluminum L-71
3894382 427 67 Three duce Oval port Aluminum L-68
3919849 427 68 Q-jet Oval port Aluminum L-36
3919850 427 68 Three duce Oval port Aluminum L-68
3919852 427 68 Three duce Rectangular port Aluminum L-71
3919878 396/427 68 Holley Rectangular port Aluminum L-78/L-72
3931067 396/427 69 Q-jet Oval port L-35/L-36
3933163 396/427 68-69 Holley Rectangular port Aluminum L-78/L-89 COPO
3933198 427 68-69 Holley Rectangular port Aluminum L-88/ZL-1
3937793 427 68 Q-jet Oval port Aluminum L-36
3937795 427 69 Three duce Oval port Aluminum L-68
3937797 427 69 Three duce Rectangular port Aluminum L-71
393841 454 73-75 Q-jet Oval port
3947801 427 69 Q-jet Oval port Aluminum L-36
3952900 396 69 2-Brl Oval port
3955287 402/454 70-71 Q-jet Oval port LS-3/LS-5
3963569 396/402/454 70-71 Holley Rectangular port Aluminum Low rise L-78/L-89/LS-6
3967474 454 71 Holley Rectangular port Aluminum
6263753 402/454 72 Q-jet Oval port LS-3/LS-5
6269318 454 72 Holley Rectangular port Aluminum

[hammerdown63]

General Engine Block Specifications
While 6 different bore size blocks have been produced, the small block engine can be classified into 3 bore sizes and 3 main bearing sizes. 283 blocks (3.875" bore, 2.3" main), 302/327/350 blocks (4" bore, 2.3" or 2.45" mains), and 400 blocks (4.126", 2.65" mains). In 1968 the main bearing saddles were increased in size from 2.3" to 2.45".

CID Year Bore Main Cap
262 1975 3.671 2 bolt ONLY
267 1979 - 81 3.500 2 bolt ONLY
305 1976 - 96 3.736 2 bolt ONLY
307 1968 - 73 3.875 2 bolt ONLY
327 1968-69 4.001 (2.3" main) 2 bolt
350 1968-88 4.001 (2.3" main) 2 bolt
265 1994 4.001 (2.45" main) 2 bolt
302 1968-69 4.001 (2.45" main) 4 bolt
350 1968-96 4.001 (2.45" main) 4 bolt
400 1970-72 4.126 (2.65" main) 4 bolt
400 1973-80 4.126 (2.65" main) 2 bolt

Notes: 2 bolt ONLY means just that,. otherwise 2 or 4 bolt can mean either design...

Casting Date
Small block casting date is located on driver side rear of block on flange forward of bellhousing. Big block on the right side of engine above the oil pan rails.
Casting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)).

Month: A = Jan, B = Feb, C = Mar, D = Apr, E = May, F = Jun, G = July, H = Aug, I = Sep, J = Oct, K = Nov, L = Dec

VIN Code Format
The vin code format is stamped onto most engines. The format consists of divisional identification number, model year, assembly plant designation and vehicle serial or sequence number.
In 68-69 model cars, the serial (VIN) number of the car the engine was installed in is stamped next to, or under the engine code ID.
Starting in 1970, the serial number is stamped either above the oil filter, somewhere on the block pad (in front of the cylinder head), or on the transmission flange somewhere. Chevrolet issued technical service bulletins to indicate which engines were to recieve a vin stamp, so who knows what could have happend (or not happened).

VIN code format Example: 13N100001
(1 = Chevrolet, 3 = 1973, N = Norwood, 100001 = Production sequence of vehicle VIN

[hammerdown63]

^^^^^There is a few of these that are wrong from Mortec....I'll make them right.

Size Year Bore Stroke Mains Rods
283 65-67 3.875 3.00 2.3 2.0 (2bolt)
302 1967 4.00 3.00 2.3 2.0 (2bolt)
302 1968 4.00 3.00 2.45 2.1 (2bolt)
302 1969 4.00 3.00 2.45 2.1 (4BOLT)
307 68-73 3.875 3.25 2.45 2.1 (2bolt)
327 65-67 4.00 3.25 2.3 2.0 (2bolt)
327 68-69 4.00 3.25 2.45 2.1 (2bolt)
350 67-75 4.00 3.48 2.45 2.1 (2 or 4bolt)
400 70-72 4.125 3.75 2.65 2.1 (4bolt)
400 73-75 4.125 3.75 2.65 2.1 (2bolt)

[meredith219]

ko412drh
19s273498
these are the numbers i found on my motor read some where that the k means its from canada

[buzzkillrubber]

Feb 13, 2012 10:43:25 GMT -5 meredith219 said:

ko412drh
19s273498
these are the numbers i found on my motor read some where that the k means its from canada

K= McKinnon Industries--St. Catherines, Ontario, Canada
04= April the month built
12= Day of the month built
DRH= 1979 350ci 170hp 4bbl. w/auto trans out of a full size car

[meredith219]

thanks

[buzzkillrubber]

No problem....anymore casting question feel free to ask....

[meredith219]

Feb 13, 2012 16:06:11 GMT -5 buzzkillrubber said:

No problem....anymore casting question feel free to ask....

alright i will i looked for ever to find those numbers and just couldnt...

[meredith219]

vo711db1 could u tell what its out of thanks

[buzzkillrubber]

Mar 7, 2012 19:25:44 GMT -5 meredith219 said:

vo711db1 could u tell what its out of thanks

None of the suffix codes ended with a #....can you get me a pic of it?