Ignition Timing

NOTE: Some engines may include a magnetic timing probe socket. Insert probe into timing socket until it almost contacts vibration damper. Socket is located 9.5° ATDC. Do not use the probe location to check timing using a conventional timing light.

On 1975-77 models, warm engine to operating temperature and ensure air cleaner is installed. Set timing with engine at idle speed and distributor vacuum hose disconnected and plugged.
On 1978-79 models, ignition timing procedures will vary with vehicle model and component application. Refer to Emission Control Tune-Up Decal in engine compartment for correct adjustment procedures.

IGNITION TIMING SPECIFICATIONS (DEGREES BTDC@RPM)

Application

Man. Trans.

Auto. Trans.

1975-77

12°@600

1978

15°@600

1979

196" V6

15°@800

15°@600

231" V6 (Exc. Turbo)

15°@800

⁽¹⁾ 15°@600

231" V6 Turbo

15°@650

⁽¹⁾	Calif. 231" V6 (VIN code "2") set timing at 580 RPM.

NOTE: For a no start condition, check connection of Pink wire at distributor cap.