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Thread: Ignition

  1. #1

    Default Ignition

    I've been using a 7-pin HEI module in a large cap distributor to control timing since V2. Updated to V4 and still ran great. After V5 update I have intermittent misfires & spark knock. Replacing plugs, wires, cap, rotor and new GM ICM has had no change. Verified ignition timing several times. Would upgrading to the HyperSpark distributor, coil & ignition box be a worth while change?

  2. #2


    Which version of V5? Andrew

  3. #3


    I've tried Build 110 currently on 171.

  4. #4


    I'd go through the System ICF and make sure that all of your Ignition Parameters are as they should be for your particular setup. Then I'd go through the timing synchronization process to make sure your timing is in sync with the ECU.

  5. #5


    Always used the HEI computer controlled drop down. 10° Ignition Reference Angle and 1 usec Inductive Delay. Timing has been syned with timing light.

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