MSD SBC BBC PRO Billet Aluminum Distributor Small & Big Block Chevy V8 (85551)

**MSD SBC BBC PRO Billet Aluminum Distributor Small & Big Block Chevy V8 (85551)** You can't go wrong with the best selling MSD Billet Distributor! The housing is machined from a billet of 6061-T6 aluminum on a state-of-the-art CNC machine producing exact tolerances. For high rpm stability, a .500” steel shaft is supported by a sealed ball bearing and a long sintered bushing. This shaft also receives a QPQ coating for friction reduction and resistance to corrosion. A precision machined reluctor is attached to the shaft which triggers the magnetic pick-up mounted in the housing. This high output magnetic pick-up is the most accurate way to trigger your ignition. Plus, with no moving parts to wear or adjust, the pick-up is maintenance free! Just above the pick-up is MSD’s adjustable mechanical advance assembly. Different springs and stop bushings are supplied so you can tune an advance curve to match your application. Fits Small Block or Big Block Chevy V8. - 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 - Polished steel shaft is QPQ coated and guided by a sealed ball bearing and extra long sintered bushing - Advance plate and weights are fine blanked from Chromoly 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 - Special oil tract improves lubrication to the distributor and cam gear - O-ring seals can be added to modified blocks to improve oil pressure control - Supplied with an HEI style distributor cap and rotor (accepts MSD Cap-A-Dapts)

• Type: Distributor
• Brand: MSD Ignition
• Manufacturer Part Number: 85551