Quote:
Originally Posted by Half-Inch Stud
Hmmm, Pontiac 350 slugs are bulletproof, while the 428-455 upper ring land are wine glass sensitive to detonation under load.
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Its much harder to get a 350 Pontiac into a high compression detonation zone due to available combustion chamber sizes as built from the factory or even swapping heads around 40 or so years later, nothing special about the pistons
my only ring land breakage experiences came from pushing the timing envelope on a stock 1968 gto and a stock 1970 400 Formula
4 pistons on the 68 and 3 on the 70 they ran real good until the smoke came out and really didnt run that bad right before tear down and ZERO cylinder wall damage
If i had the OPs 428 situation i would probably use 6x4 heads milled a bit and have fun
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