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Proform HEI Adjustable Vacuum Advance Fits GM Applications

Proform 66952C

778-66952C

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Proform HEI Adjustable Vacuum Advance Fits GM Applications $17.99
HEI Adjustable Vacuum Advance
  • Fits GM Applications

  • Proform 66952C Details

  • For Fine-Tuning Your Vacuum Advance
  • For Optimum Performance

  • Specifications:

    Adjustable Vacuum Advance Included
    Yes
    Advance Limit Bushings Included
    No
    Advance Weights Included
    No
    Quantity
    Sold individually
    Manufacturer's Part Number:
    66952C

    Easily replaces your OE non-adjustable unit. This Proform Adjustable HEI Vacuum Advance allows you to change the amount of ignition vacuum advance for maximum performance while preventing detonation. This helps improve engine performance as well as better fuel economy.

    66952C - Proform Adjustable HEI Vacuum Advance is rated 4.7 out of 5 by 3.
    Rated 5 out of 5 by from Ask. Vacuum advance Easy install. The adjustable advance feature allows you to tune advance to your engines specific needs. My fuel mileage increased significantly and low end and part throttle response were increased!
    Date published: 2017-11-08
    Rated 4 out of 5 by from good product for the money I RECENTLY PURCHASED THIS VACUUM ADVANCE FOR THE ADJUSTABLE FEATURE AND IT WORKS GOOD.
    Date published: 2017-09-15
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    Some parts are not legal for use in California or other states with similar laws / regulations