Seller notes

MSD Vacuum Advance Lockout kit For HEI DistributorsGENUINE MSD Part Number - 88346 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. Both of these parts are standard equipment on the MSD Circle Track HEI distri...

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