MSD's mechanical advance lockout plate replaces the mechanical advance weights and simply slides over the pins on the shaft and advance assembly to eliminate mechanical timing advance — standard equipment on the MSD Circle Track HEI distributor, and compatible with most GM HEI distributors.
Specifications:
- Category: Ignition
- Distributor Type: Accessories
- Part Type: Distributor Mechanical Advance
- Product Type: Accessory
- Sub Category: Distributor and Magneto
- Warranty: Manufacturer's Limited 1 Year Warranty
- Part Number: 88363
Will not work on MSD Pro Billet HEI PN 8365 or 83653.
FAQ
What does this kit do?
It locks out mechanical timing advance on a GM HEI distributor.
What distributors is it compatible with?
Most GM HEI distributors; it's standard equipment on the MSD Circle Track HEI.
What will it NOT work with?
The MSD Pro Billet HEI, PN 8365 or 83653.
How does it install?
The lockout plate slides over the pins on the shaft and advance assembly — no welding required.

