ACCEL 35361 - Distributor Control ModuleIgnition Control Module - High Performance - GM HEI 4 Pin 1974-85 - EachDistributor Control Module; HEI 4 Pin Module;This high performance HEI module provides your plugs with more spark over the stock module. The solid state electronics provide high coil out put and superior reliability. The Dwell control circuit ensures, long consistent coil charging. The current control circuit protects against coil over heating. This module fits most GM HEI for V8 engines with the 4 pin module 1974 thru 1985 Fits Most Stock And Modified Distributors Solid State Electronics Dwell Control Circuit Brand: ACCEL C.A.R.B. EO #: D-221-4 Category: Distributors Color: Black Emission Code: 1 Material: Polymer part type: Ignition Control Module Product Type: Ignition and Electrical Components Sub Category: Control Modules Warranty: Manufacturer's Limited 90 Day Warranty Weight: 0.1300