Quote:
Originally Posted by Ralph A Powell
A good read on honing the big end of steel rods is in the SA Design Jenkins small block Chevy book I’d how he puts .002 shim stock the hens the rods round then removes it. The rod is now out of round but high rpm it stretch’s back round as I remember it’s when the rod does not have enough material at the parting line.
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This is when there weren't any good connecting rods available. Today's rods stay round even at higher rpm. That's if it's a good quality rod. Crower, Callies, etc