JEGS Adjustable Vacuum Advance | Compatible with GM V8 HEI Distributors | Replaces OE Non-Adjustable Unit
Special Features
- FITS GM V-8 HEI distributors
- REPLACES the OE non-adjustable unit
- ALLOWS YOU TO CHANGE THE AMOUNT OF IGNITION VACUUM ADVANCE for maximum performance while preventing detonation
- IMPROVES fuel economy, throttle response, horsepower, and performance
- INCLUDES 3/32" allen wrench and easy-to-follow instructions
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