BCCX 8563 Pontiac V8 350-455 Pro-Billet Distributor

Fits 326, 350, 389, 400, 421, 428, and 455 Pontiac. Must be used with an MSD 6, 7 or 8-series ignition.For stable timing, a high-output magnetic trigger pick-up is used to supply the ignition with a trigger signal. Additional stability is achieved via the 0.500" hardened distributor shaft that is supported by sealed ball bearings.; MSD's Pro-Billet Pontiac V8 Distributor for Pontiac engines built for either street performance or hard core racing applications.; Special features include a fully adjustable mechanical advance assembly. For all-out racing, the advance mechanism can also easily be locked-out.Features and Benefits: Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction; Advance weight pins are staked and tig welded to the plate; CNC machined billet aluminum housing and billet aluminum base; 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; Mechanical advance assembly can be locked out for crank trigger systems; Must be used with an MSD Ignition Control; No CARB Exemption Order Number; Nylon pads ensure smooth operation of the advance weights; Polished steel shaft is QPQ coated and guided by a sealed ball bearing; Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts); Will not accept a vacuum advance canister