MSD Heat HEI Ignition Module

Description

MSD83647 by MSD IGNITION
Ignition Control Module, Heat Digital HEI Module

This all new Heat HEI Module supersedes the current PN 83645. Using upgraded components, the HEAT produces high output for stock and MSD applications plus has a built-in rev limiter that is more accurate and easier to set with the engine running.
Works with non-computer controlled (4-Pin) HEI housings.
Easily installs to non-computer controlled (4-Pin) HEI housings
Built-in adjustable rev limiter can easily be set externally
Advanced dwell control for improved high rpm output
The Hottest HEI Module you buy-period
Produces an incredible 7.5 amps of juice
Adjust the rev limiter without removing the cap
Fits in stock HEI distributor

Additional information