Holden 253-308-304, Magnetic Trigger, Mechanical Advance, CNC Machined Housing

MSD8589

D8589

CNC machined billet aluminium housing and billet aluminium. Easy to adjust mechanical advance with supplied springs and stop bushings. Maintenance- free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range. Polished steel shaft is QPQ coated and guided by two sealed ball bearings. Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction. Mechanical advance assembly can be locked out for crank trigger systems. Advance weight pins are staked and tig welded to the plate. Nylon pads ensure smooth operation of the advance weights. Supplied with HEI style distributor cap and rotor. Must be used with an MSD 6, 7, 8 or 10 Ignition Control. Does not accept a vacuum advance. Will not fit Tunnel Ram or EFI manifolds. For accurate timing, a high output magnetic pick-up is used that plugs directly into your MSD Ignition Control. There is an easy-to-adjust mechanical advance mounted on top of each distributor and is easily tuned with an assortment of supplied advance stop bushings and advance springs.