V8 Ignition Timing: Notes

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NOTE: Procedures for timing adjustment are for engines equipped with HEI-EST distributors only. Other engines are equipped with C3I, DIS or IDI ignition system. Timing on these systems is not adjustable.

NOTE: Some engines are equipped with a socket for a magnetic probe timing meter, located 9.5 degrees ATDC. DO NOT use this location for setting timing using a conventional timing light.