Join Date: Aug 1998
Location: Waldorf Md. USA
Re: turning BBC cranks
The crank will handle any size that you can get bearings for. It is very common to offset grind the rods down to Small block size, thats .100" smaller ! Small block 400 cranks are turned down to 350 size every day to make 383's. Thats a .200" grind !! Most crankshafts are so over engineered that it is not a problem anyway.
What is more important than the size is having the crankshaft properly reground, especially keeping the proper radius on the journal ends.
Advanced Automotive Machine
1971 Chevelle "Heavy Chevy" original owner
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