GM HEI Distributor Vacuum Advance
13 Degrees of Total Vacuum Advance
Fits GM HEI Models 1996 and Earlier, Plus Ford, AMC, and Chrysler HEI's
Features:
- HEI Adjustable Vacuum Advance
- Will Not Work with Computer Controlled HEI Distributors
- GM HEI Distributors Pre to 1997
- Allows User To Fine-Tune The Vacuum Advance for Optimum Performance
- PROFORM Parts Brand Product
- Sold Individually
PART# 66952C
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HEI Adjustable Vacuum Advance Fits GM Style HEI Distributors, including Ford, AMC, and Chrysler Models. For fine-tuning your vacuum advance and optimum performance.
Setting Instructions: Counter-clockwise rotation reduces the vacuum, and do not turn more than 5 full turns because the screw can fall out.
- Adjustable.
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