PROFORM 66944C High-Performance HEI Ignition Control Module for GM 4-Pin Distributors, 1974-1988

Upgrade ignition performance and dependability with the PROFORM 66944C High-Performance HEI Ignition Control Module. Designed for compatible GM HEI distributors with a 4-pin configuration, this module helps provide reliable ignition control for street-driven, performance, and restoration applications. Its application range covers select GM vehicles from 1974 through 1988, making it a practical replacement or performance-oriented upgrade for aging or failing ignition components.
The PROFORM 66944C is engineered to work with compatible GM HEI ignition systems and supports consistent spark management under demanding operating conditions. Replacing a worn ignition module can help restore starting performance, maintain stable engine operation, and reduce the risk of intermittent ignition issues. Verify distributor compatibility, connector configuration, and vehicle application before installation to ensure proper fit and operation.
This high-performance ignition module is supplied as an individual replacement component and is identified by PROFORM part number 66944C. It is intended for enthusiasts, technicians, and builders seeking a dependable solution for GM HEI ignition systems. Installation should follow the vehicle manufacturer’s service procedures and include appropriate checks of the distributor, wiring, coil, and related ignition components. With its focused GM HEI application and straightforward replacement design, the PROFORM 66944C provides a reliable way to service compatible 4-pin ignition systems.

Features:

• Brand: PROFORM

• Part Number: 66944C

• Product Type: High-performance HEI ignition control module

• Application: Compatible with select GM HEI 4-pin distributors

• Model Years: Designed for select GM applications from 1974 through 1988

• Configuration: 4-pin HEI ignition module

• Quantity: Sold individually

• Use: Replacement or performance upgrade for compatible GM HEI ignition systems