MSD Ignition 85561 Pro-Billet Distributor

If you have a slightly taller or shorter block, or have decked the heads, the distance between the distributor mounting pad and the cam gear/oil pump drive may be different. MSD offers a Pro-Billet Distributor with an adjustable slip collar with 1½” of adjustment so you can be sure the distributor is installed correctly. The housing is machined from a billet of 6061-T6 aluminum on a state-of-the-art CNC machine producing exact tolerances. Modified blocks can also take advantage of the O-ring seals to help maintain proper pressure. 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 pickup mounted in the housing. This high output magnetic pickup is the most accurate way to trigger your ignition. Plus, with no moving parts to wear or adjust, the pickup is maintenance-free! Just above the pickup 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. NOTE: Must be used with an MSD 6, 7, 8 or 10 Series Ignition. Supplied with a Cap and Rotor.

•Trigger Style: Magnetic
•Advance Type: Mechanical
•Cap Style: HEI/Male
•Tach Drive: No
•Slip collar: Yes (MSD 85551 is a fixed collar )
•Computer Controlled Compatible: No
•Drive Gear Material: Iron (Bronze gear available KMJ 1083 )
•Distributor Rotor Rotation: Clockwise
•Helix Totation: Standard
•Cap Color: Red
•Housing Material: Billet Aluminum
•Housing Finish: Natural