8584 Fits 351W with iron gear. Must be used with an MSD 6, 7 or 8-series ignition. For Ford enthusiasts that are serious about performance! Just under the brass terminals of the MSD cap and rotor is an easy-to-adjust mechanical advance assembly. The assembly is fine blanked from chro-moly steel, TIG-welded for strength plus receives a QPQ coating. The precision weights glide on nylon bushings for smooth advancement and different springs and stop bushings are supplied so a variety of advance curves can be tuned. The steel shaft that spins the advance and reluctor receives a friction reducing coating plus is guided by a sealed ball bearing and long sintered bushing. This combination provides stable timing signals and spark delivery at any rpm. Triggering chores are handled by MSD's race proven, maintenance-free magnetic pick-up. CNC machined billet aluminum housing and Dupont Rynite base No CARB Exemption Order Number Supplied with Cap-A-Dapt and rotor (accepts MSD socket style caps) Mechanical advance assembly can be locked out for crank trigger systems Nylon pads ensure smooth operation of the advance weights Advance weight pins are staked and tig welded to the plate Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction Polished steel shaft is QPQ coated and guided by a sealed ball bearing Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range Easy-to-adjust mechanical advance with supplied springs and stop bushings
