Dyno Test – 363 Crate Engine Z vs. Z2 head
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Dyno Test – 363 Crate Engine Z vs. Z2 head Standard port Z2 Head makes more power than Z Head with high port exhaust and offset intake port Z Head Z2 Head Z2 Better Horsepower 500 507 +7 Torque 446 451 +5 Z2 Head Curve Z Head Curve