Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - lighter forged pistons (KB vs speed-pro) worth $325 on a chevy 454
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Old 05-17-2011, 03:17 PM
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Originally Posted by Berres
Ok thanks for answer!

Ah, so it's how fast the engines rev that is affected. Is that affect HP and torque?
I will re-balance the engine so that isn't to consider.

But is the weight difference so noticable so it's worth 325? If it is very noticable I deal with it and order it
Weight doesn't affect absolute top end power at a stable RPM. But when the crankshaft is being accelerated, the weight of the masses attached to it and its own weight absorb power. This, then is power lost to the task of accelerating the vehicle.

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