Hei Control Module

The ACCEL HEI Control Module (SKU ACL35362) is a high-performance ignition control module engineered for General Motors HEI 8-pin distributors covering model years 1986–1995. This remote-mount coil design replaces OEM ignition modules and delivers the precision timing control and voltage regulation critical to reliable engine start and idle stability on classic GM V8 engines.

The 8-pin configuration integrates seamlessly with factory HEI distributor systems, accepting the standard GM connector and mounting interface. Remote coil placement isolates heat and electrical noise away from the distributor housing, reducing thermal stress on solid-state circuitry and improving long-term durability in high-vibration engine bays. This module supplies the switching signal to fire the ignition coil at precise crankshaft angles, directly affecting combustion timing, fuel economy, and cold-start performance on carbureted and early fuel-injected platforms.

This replacement module is ideal for restorers, hot-rodders, and engine builders working with 1986–1995 GM small-block and big-block platforms. Whether diagnosing a worn OEM unit causing weak spark or upgrading to improved switching electronics, the ACCEL HEI Control Module addresses the most common ignition reliability issues on these engines. At 0.2 lbs and compact dimensions (5.35 × 1.8 × 7.4 in), it fits tight engine compartments without modification to existing wiring or mounting points.