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  • 1 Post By Mike P
  • 1 Post By rspears

Thread: MSD 8360 distributor vacuum advance
          
   
   

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  1. #3
    rspears's Avatar
    rspears is offline CHR Member/Contributor Visit my Photo Gallery
    Join Date
    Sep 2007
    Location
    Gardner, KS
    Car Year, Make, Model: '33 HiBoy Coupe, '32 HiBoy Roadster
    Posts
    11,244

    Welcome to CHR.
    I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed compared to WOT. Getting this mixture to burn completely takes more timing. I think you're getting surge because of unequal burn between cylinders. Here's a really good explanation of vacuum advance - (link)

    https://www.onallcylinders.com/2015/...y-you-need-it/
    Last edited by rspears; 10-31-2024 at 09:53 AM.
    t-top havoc likes this.
    Roger
    Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.

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