Description
When you’re tuning a race engine, vacuum advance becomes a liability—it introduces timing inconsistency at the exact moment you need the most precise control. The MSD Vacuum Advance Lockout Kit eliminates this variable by physically disabling the advance mechanism in your GM HEI distributor, locking your ignition timing to a fixed setting for repeatable, predictable performance. If you’re serious about maximizing horsepower and eliminating variables during tuning, this is a must-have for any carbureted or forced-induction build running a stock HEI platform.
- Material: Black plastic
- Fitment: GM HEI distributors
- Excludes: MSD Pro Billet 8365/83653
- Quantity per kit: One lockout plate
- Installation: Bolt-on
- Application: Racing, fixed timing
- MPN: 88364
Reviews
There are no reviews yet.