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Post by G&C Performance on Apr 30, 2012 9:02:49 GMT -5
drill doctor  i'm with you guys... i use the stock bolt on the hd 400's..... then drill and tap to a 3/8 on the 350's. never had a problem. |
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Post by pourdown437 on Apr 30, 2012 9:27:52 GMT -5
3/8 is plenty
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Post by critter4 on Apr 30, 2012 11:17:34 GMT -5
How do you get it to drill I have and aod on my ford and I can't get it to drill tryed three bits still no good Had a 3 speed one couldn't drill it either. I ended weld a bolt to the output shaft. It worked just fine  3/8 bolt is plenty IMO |
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Post by cheater111 on Apr 30, 2012 14:44:30 GMT -5
I drilled mine with a 21/64th bit and tapped to 3/8 with a grade 8 bolt
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Post by derbyfreak92 on Jun 14, 2012 1:43:55 GMT -5
seen it done the other day, 1/2 bit , 1/2 drill an a poop load of cuttin oil. U dont want to drill it more than a inch
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oldtrx
Feature Winner
Posts: 109
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Post by oldtrx on Jul 17, 2012 23:28:28 GMT -5
I drilled mine with a 21/64th bit and tapped to 3/8 with a grade 8 bolt drilled one abit back, broke tap off in it and couldnt get it out, i also flipped a bolt and welded it up. seems to be working well so far... |
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i'm with you guys... i use the stock bolt on the hd 400's..... then drill and tap to a 3/8 on the 350's. never had a problem.
