Every BBC rod I have used on a Pontiac crank has been .025”-.030” side clearance.
If .029” sounds like a lot….one mopar I run on the street has a Billet crank out of a Top Fuel Hemi, and has .075” side clearance on the rods.. I would say excessive side clearance might be a issue if it wasn’t for that engine, cause we have been mercilessly thrashing on it since 1994..still runs great.
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