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Thread: 8980 & 85551

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  1. #1
    Join Date
    Jul 2015

    Default 8980 & 85551

    Recently bought a car , Chevy sb, 6-71 blower.
    It has a 8980 timing control, and also a 85551 distributor. Reading info it seems that I should have a locked out dist such as 85501. The car does not seem to have power at the top end of the one time I have run it up the strip. Should I remove the 8980, or is there a way to lock out the existing dist? The car also has a 7220 7AL2 fitted.

  2. #2
    Join Date
    Jan 2010
    Brisbane, Australia


    One would assume that your distributor is already locked out.

    Have you had the cap off the see if it is locked out?
    Regards, Gary

  3. #3
    Join Date
    Jul 2015


    I'm not very up on distributors, how do I tell if it's already locked out pls?

  4. #4
    MSDTECH80 Guest


    Like Gaz64 was saying take the cap and rotor off. If you see weights and springs on the top plate were the rotor seats. Then its not locked out.

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