Seller notes

Compatible with most GM® HEI Distributors. This product is not created or sold by GM®. Quick easy components to lock out timing on HEI distributors.; MSD offers two kits to make locking out mechanical and vacuum timing advance in HEI distributors an easy task for Circle track racers. No more welding a tac on the mechanical advance weights or trying to find a way to keep the vacuum advance from moving once the canister is removed. MSDs mechanical advance lockout plate replaces the mechanical ad...

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