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Engine Compression

When making compression checks, disconnect the ignition (Pink wire) connector at High Energy Ignition distributor. With air cleaner removed and throttle and choke wide open, crank engine through at least four compression strokes.

ENGINE COMPRESSION

Application Specification
Compression Ratio
  403" 7.9:1
  All Others 8.5:1
Compression Pressure 150 psi
Maximum Pressure Variation 20 psi
Recommended Fuel Unleaded (87 AKI)