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Thread: MSD 6420 6AL

  1. #1

    MSD 6420 6AL

    I have a 6420 box now and was wondering if the 6425 box would be a good upgrade,have no issues on mine.

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    Jan 2006
    Location
    La.
    Posts
    2,890
    Why :?: The 6420 will run anything you have with an added 2 or 3 step. I've run the 6420 on blown alcohol engines and have 2 of them. I also have a 7AL sitting on the shelf which i don't use, because i don't find it necessary.

    JMO

    Zip.

  3. #3
    Just thinking :wink:


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