Originally Posted by coolracing
Correct me if im wrong but I beleive that was a grumpy jenkins combo that required main bearing spacers. I still have a set of spacers new in the box for a 400 chevy block when putting a 327 crankshaft in it!
There are three main bearing sizes, and two rod bearing sizes up to 1986:
400 Main = 2.650 dia
Large Journal - 2.465 dia
Small Journal = 2.300 dia
Rods:
400 and large = 2.100 dia
small = 2.000 dia
(And the newer aftermarket Honda 1.888)
Cool, you are correct on your parts application to put a 262/267/302/305/307/327/350 large journal crank into a 400.