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Home >> Chevrolet >> 1975 >> Hi-Cube Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Tune-Up Procedures - V8 >> Ignition Timing >> 1978 Models

1978 Models

Ignition timing is checked or adjusted with engine at normal operating temperature, transmission in Neutral (Drive on automatic transmission equipped Light Duty vehicles), distributor vacuum hose disconnected and plugged.