MSD's vacuum advance block-off kit bolts in place of the vacuum advance canister on a GM HEI distributor to neatly and effectively lock timing solid — 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 Vacuum Advance
- Product Type: Accessory
- Sub Category: Distributor and Magneto
- Warranty: Manufacturer's Limited 1 Year Warranty
- Part Number: 88364
Will not work on MSD Pro Billet HEI PN 8365 or 83653.
FAQ
What does this kit do?
It locks out vacuum timing advance on a GM HEI distributor by bolting in place of the vacuum advance canister.
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?
It bolts in place of the vacuum advance canister to lock timing solid, with no welding required.

