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Home >> GMC >> 1982 >> Jimmy Full Size V8-305 5.0L >> Repair and Diagnosis >> Specifications >> Electrical Specifications >> Ignition Timing >> Federal >> Automatic

Automatic

TIMING SPECIFICATION
With High Altitude 4° at 600 rpm
Without High Altitude 4° at 500 rpm

NOTE: Timed at number 1 cylinder with engine at normal operating temperature and distributor vacuum advance hose disconnected and plugged.

CAUTION: Always check the underhood emissions label (if available). Specifications and procedures on the underhood emissions label supercede all others.

TIMING ADJUSTMENT PROCEDURE: Ignition Timing