Thread: pistons

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Hypereutectic pistons are only more prone to failure when compared to forged pistons. The trouble is, the prices don't compare. Go ahead and run the hypers with confidence. All of the major auto manufactureres are using hypereutectic pistons in most of their engines. I'm running Keith Black hypereutectic pistons in my 350 under a pair of Vortec heads and 9.25:1 compression. I estimate the engine makes over 300 hp at the crank and runs on 87 octane. Run your ring gaps loose.

You may want to double check your compression numbers. I'm running a 12cc dish and came up with 9.25:1 compression. You need to know your head gasket thickness and deck clearance to get an accurate compression ratio number.