MSD 88364 Vacuum Advance Lockout for GM HEI Distributors

The MSD 88364 Vacuum Advance Lockout is designed to disable the vacuum advance mechanism on GM HEI (High Energy Ignition) distributors, providing fixed ignition timing for racing and performance applications. This simple yet effective component replaces the vacuum advance canister to lock out timing advance, giving you complete control over your ignition curve.

Key Features:

• Locks out vacuum advance on GM HEI distributors for consistent ignition timing
• Easy, bolt-on installation with no modifications required
• Ideal for racing applications where fixed timing is preferred
• Compatible with most GM HEI distributors
• Allows you to run a fixed mechanical advance curve without vacuum interference

This lockout plate is perfect for drag racing, circle track, or any performance application where you want to eliminate vacuum advance and maintain precise timing control. The MSD 88364 provides a quick and efficient solution for tuning your GM HEI distributor for maximum performance.