Brand: MSD Ignition Manufacturer’s Part Number: 84791 Distributor Cap Included: Yes Distributor Cap Style: Male/HEI Distributor Cap Type: Small cap Ignition Coil Included: No Ignition Module Included: No Computer-Controlled Compatible: No Trigger Style: Magnetic Advance Type: Vacuum and mechanical Ignition Box Required: Yes Mechanical Tach Drive: No Slip Collar: No Distributor Gear Material: Steel Distributor Gear Rotation: Standard Housing Material: Billet aluminum Housing Finish: Natural Marine Use: No Remanufactured: No Quantity: Sold individually. Notes: Distributor is 8.250 in. tall from engine to top of distributor cap.

MSD Pro-Billet Street Distributors

MSD Pro-Billet Street distributors are a popular choice for those who desire race-proven performance for their street machine. A vacuum advance canister provides improved economy, and the proven MSD mechanical advance mechanism allows you to dial in a timing curve to fit your needs. As always, an advance kit of springs and stop bushings is included. The housing features an all-billet 6061-T6 aluminum design for accuracy to within .001 in. An oversized steel shaft is QPQ-coated for low friction, and rides in sealed ball bearings at the top and bottom of the distributor.

An extra-long sintered bushing replaces the ball bearing at the bottom for Chevrolet models. This combination keeps the shaft steady, creating accurate spark delivery at any rpm. They rely on a magnetic pickup to trigger the MSD ignition control, which delivers the powerful sparks to the coil. This pickup is extremely accurate and never needs adjusting. Pro-Billet Street distributors require the use of a separate ignition box, such as an MSD 6, 7, 8, or 10 Series ignition. Order the model recommended for your vehicle and engine application.