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Home >> Chevrolet >> 1972 >> G20 Van Base, 5.7L Eng, Automatic Trans, Trans Mfr CD THM350, LPG >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Tune-Up - V8 >> Ignition Timing

Ignition Timing

Ignition timing is checked or adjusted with engine at normal operating temperature, distributor vacuum line disconnected and plugged, transmission in Neutral, and engine at normal idle.

Ignition Timing Specifications

Application Man. Trans. Auto. Trans.
307" 4°BTDC 8° BTDC
350" 4° BTDC 8° BTDC
402" 8°BTDC 8° BTDC