HEI Distributor 1975-79 SB & BB Oldsmobile 260-

The HEI Distributor for 1975-79 Small Block and Big Block Oldsmobile engines is a direct-fit replacement that modernizes your ignition system with solid-state reliability. Designed for builders, restorers, and street enthusiasts working with 260-cubic-inch and larger displacement Oldsmobile powerplants, this distributor eliminates the point-and-condenser maintenance headaches of original equipment while delivering consistent spark timing across the RPM range. Whether you're freshening a stock engine or building a performance platform, the HEI design has proven itself across decades of hot rod and street machine applications.

High Energy Ignition (HEI) systems use an integral ignition coil and solid-state switching module that requires no points or condenser, drastically improving spark energy and dwell consistency compared to breaker-point distributors. The Specialty Products Company design mates a mechanical advance curve tuned for Oldsmobile engine characteristics with a reliable cap-and-rotor design that handles street and light track duty. The compact construction—measuring 10.3 by 7.85 by 17.75 inches and weighing just 6.18 pounds—fits within the original distributor bore, making installation straightforward for engine swaps and restorations without requiring custom mounts or timing cover modifications.

Restorers and performance enthusiasts running 1975–1979 Oldsmobile Small Block or Big Block engines benefit from plug-and-play installation, needing only basic timing adjustment after startup. The HEI system's sealed design protects internal components from moisture and dirt, essential for reliable cold-weather starting and consistent idle quality. Verify your engine displacement and model year (260, 307, 350, 403, or 455 cubic inches) against your vehicle's casting numbers to confirm compatibility before purchase; proper fuel curve tuning may be required if upgrading from original points systems on carbureted applications.