1981 GMC K1500 Performance Distributors

The street Pro-Billet is a popular route for people looking for proven race performance for their street cars. A vacuum advance canister provides economy and the proven MSD mechanical advance gives you the opportunity to dial-in a timing curve to fit your needs. Inside, an oversized steel shaft is QPQ coated for low friction and rides in a sealed ball bearing at the top of the distributor with an extra-long sintered bushing at the bottom. This combination keeps the shaft steady creating accurate spark delivery at any RPM. The street Pro-Billet relies on a magnetic pick-up to trigger the MSD Ignition control which delivers the powerful sparks to the coil. This pick-up is extremely accurate and never needs adjusting.

Product Features:

• Designed for street/performance use w/mechanical or vacuum adv.
• Must Be Used w/An MSD Ignition Control
• Supplied w/An HEI Style Distributor Cap And 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

The Chevrolet HEI distributor is a favorite for muscle cars, street rods and even circle track racers. The integrated coil keeps under mount wiring clean, and for race cars, the idea of running one wire to the distributor keeps things simple. However, when it comes to performance, the stock HEI falls short. MSD answers the need for a strong, accurate and high performance HEI with our Pro-Billet HEI. The distributor is supplied with our digital HEI module and coil so there is plenty of spark energy combined with improved dwell and timing control. Tig welded on top of the distributor shaft is MSD’s adjustable centrifugal advance assembly. Three sets of springs and four stop bushings let you dial in up to 24 different timing curves to match your driving needs. Plus, there’s a vacuum advance for those concerned with economy. All of this is assembled around a precision and great looking CNC machined housing.

Product Features:

• Complete performance HEI distributor upgrade for Chevy V8 engines
• Supplied w/Brass Terminal Distributor Cap And Rotor
• Full Spark Energy Output To 9000 Rpm
• An 8.5 amp; single spark; inductive discharge ignition module
• Includes MSD PN[83647] and MSD HEI Coil PN[8225]
• 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