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timing chain for a Z32 would weigh? All that mass has to be moved too as the RPMs increase thus accounting for additional drag. Thats why most high performance V engines with overhead cams (expecially quad overhead cams) use belts and not chains. : less friction, noise, and harmonic vibration with a belt hence more power. A chain has more of all three, especially transferring harmonics vibration and friction. : Mike
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