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Engine Compression

When making compression checks, disconnect ignition switch Pink wire from High Energy Ignition (HEI) system. With air cleaner removed and throttle and choke wide open, crank engine through at least 4 compression strokes.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio 8.0:1
Compression Pressure 130 psi (9.1 kg/cm2 )
Maximum Pressure Variation 30 psi (2.1 kg/cm2 )