MSD - 85557
Distributor - Pro-Billet - Magnetic Pickup - Mechanical Advance - HEI Style Terminal - Black - Rev Limiter - Chevy V8 - Each
The most popular performance distributor in the market and now comes with Black Cap! Must be used with an MSD 6, 7 or 8-series ignition.
MSD's most popular performance distributor is now available with a black cap that includes 316 Stainless Steel Terminals. 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 maintenancefree! 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.
- Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction
- CNC machined billet aluminum housing and billet aluminum base
- Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
- Special oil tract improves lubrication to the distributor and cam gear
- Advance weight pins are staked and tig welded to the plate
- Polished steel shaft is QPQ coated and guided by a sealed ball bearing and extra long sintered bushing
- O-ring seals can be added to modified blocks to improve oil pressure control
- Easy-to-adjust mechanical advance with supplied springs and stop bushings
- Supplied with an HEI style Black Cap w/316 Stainless Steel terminals and rotor (accepts Cap-A-Dapts)
- Will not accept a vacuum advance canister
- Must be used with an MSD 6, 7 or 8 Series Ignition Control
- Nylon pads ensure smooth operation of the advance weights
- Mechanical advance assembly can be locked out for crank trigger systems
- No CARB Exemption Order Number
