oldcutlass

Will a 425 flywheel bolt to a 330?

Kennybill

Yes, almost positive. 330, early 400's (B&E block) and all 425's, same flexplate & manual flywheel

oldcutlass

Are 1967 330 HC cranks drilled for a pilot bearing.

Kennybill

I doubt it. Unless the vehicle was manual shift they weren't drilled for pilot bearing/input shaft. I just went through my stash of 425 engines/crankshafts looking for a drilled 425 crankshaft, 11, none drilled. I found a drilled 455 crankshaft in a Marine engine, plus like new flywheel. The machine shop I use will machine the crankshaft for around $100.

oldcutlass

Thanks for the info I could not remember.

Oldsmaniac

The 330 and 425 use the same bolt pattern on the crank and only factory stick engines had the cranks drilled for pilot bearing.

oldcutlass

Thanks for the info.