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Proform 66952C

HEI Adjustable Vacuum Advance Fits GM Applications

Proform 66952C

778-66952C

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Proform 66952C HEI Adjustable Vacuum Advance Fits GM Applications $21.99
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.

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