Nope.
Only the stroke.

I see clearance for the OHC pistons was .003-.005. My Pistons are .004.
They run quite in mine. Far lighter than stock too. That also makes it easier on the rods. If hotroding the OHC, consider using Chevy rods, they are made of better material.

Tom

Inliner Member 1716
65 Chevelle Wagon and 41 Hudson Pickup
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