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Thread: Spark plug gap and heat rating

  1. #1
    Join Date
    Jul 2018
    Posts
    2

    Default HELP !!! Spark plug gap and heat rating

    I run a Dirt Modified with a 350 on 9.5:1 compression ratio and a 2bbl. We run E98 ethanol and try to turn around 7,000 rpm. We run an MSD Pro Billet distributor. What plug gap and heat range would you recommend?
    Last edited by Magooracing; 07-26-2018 at 02:35 PM.

  2. #2
    Join Date
    Jul 2018
    Posts
    2

    Default

    It is MSD HEI Pro-Billet distributor coil on top. Currently 0.025in plug gap.
    Reason for the question is there is a miss especially as I get into higher rpm . Like a cylinder isnít firing. We also have heat issues.
    Last edited by Magooracing; 07-24-2018 at 10:27 AM.

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