318 stroker

The radius issue is very common. In fact, the 496 I'm doing was "completely prepped and ready to bolt in" by a highly regarded supplier. I found that the 7 & 8 rods had no side clearance... Both rod bearings were hitting their respective radii. Once I chamfered them - no problems. The other 3 crank throws were fine and went together with .011" side clearance with no special chamfering.