Vacuum Advance Lockout For GM Hei Quick Easy Components To Lock Out Timing On GM Hei Distributors MSD Ignition Heating & Cooling - Radiators - Radiator Caps Military Specification Hard Anodized finish

Military Specification Hard Anodized finish (Mil-A-8625 F Type III Gray)

68003291AC

End 1 Inside Diameter: 13/16 Inch

ensuring that you can get out on the trail as soon as possible

Includes one BDS013615

Vacuum Advance Lockout For GM Hei Quick Easy Components To Lock Out Timing On GM Hei Distributors MSD Ignition Heating & Cooling - Radiators - Radiator Caps Military Specification Hard Anodized finishBoth of these parts are standard equipment on the MSD Circle Track HEI distributor but will work on most GM HEI's. MSDs mechanical advance lockout plate replaces the mechanical advance weights and simply slides over the pins on the shaft and the advance assembly to eliminate any mechanical timing advance. The 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.