MSD 83647 - HEAT HEI Module

Features

• 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 will buy-period!
• Produces an incredible 7.5 amps of juice!
• Adjust the rev limiter without removing the cap!
• Fits in stock HEI distributors