MSD Pro-Billet Distributor w/Black Gear for SBC/BBC w/6/7/8 Ignition, Black - (MSD-85555)

Pro-Billet Distributor; Fits Chevy V8 Engines; Must Be Used w/MSD 6/7/8 Series Ignitions; Black;

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. Must be used with an MSD 6, 7 or 8-series ignition.

Features & Benefits

• CNC machined billet aluminum housing and billet aluminum base
• Advance plate and weights are fine blanked from chrome moly steel
• QPQ coated for friction reduction
• QPQ coated polished steel shaft; guided by sealed ball bearings
• Will Not Accept Vacuum Advance Canister
• Must Be Used w/An MSD Ignition Control
• Supplied w/HEI style distributor cap/rotor (accepts Cap-A-Dapts)
• O-ring seals can be installed for oil press. control (Mods only)
• Special oil tract improves lubrication to the dist./cam gear
• Nylon pads ensure smooth operation of the advance weights
• Advance weight pins are staked and tig welded to the plate
• Mech. advance assem. can be locked out for crank trigger systems

Specifications: