Heat up the street or the dirt track with MSD’s new Heat HEI Module! The all new Digital HEI Module will fire up your stock GM HEI Distributor with MSD performance. The Module is a direct plug-in for the factory 4-pin HEI module and will produce up to 7.5 amps of current. This increased energy will continue through racing rpm reaching 9,000 rpm!

The HEI Module, PN 83647, is extremely accurate in its delivery of this energy resulting in more accurate ignition timing. Another unique feature is an adjustable rev limiter. You can dial in an engine saving rev limit ranging from 2,000-10,000 rpm while the engine is running!

For more information contact MSD Ignition, www.msdignition.com or call 915-855-7123.