Join Date: Jan 2002
Location: Calgary, Canada
Re: 327 crankshaft
All High Horse 327 crankshafts came drilled from the factory. Eg. 327/365HP and 327/350 Hp.
As noted it is not that difficult to drill and tap the snout, done it lots myself. I measured a factory Crank hole just now, and the depth of the tapped hole is 1.625. It is 7/16UNF. I do them in a drill Press so as to keep the hole straight. Hope this Helps.
2002 Jerry Bickle Cavalier, 446" Small Block, Brodix Canted Valve, lenco 5 speed, 7.54 @ 180. mph,1.06 60', 2235 lbs for 2014. GM Canada Docs, Highly Optioned 69 RSZ28 , Hugger Orange, White Stripes, 42,000 mile survivor, owned since 1973.