Features Produce high output for your original or MSD application with an MSD Heat HEI Ignition Module Externally set the programmable rev limiter for over-rev protection without breaking a sweat Produces a jaw-dropping 8.5 amps of juice Mounts in a stock HEI housing or in MSD¡¯s pro-billet HEI distributor Advanced dwell control makes for improved high RPM output A GM coil can be used and a tachometer is required to program the rev limit Your MSD Heat HEI Ignition Module is protected by a limited warranty DescriptionProduce the high output your stock or MSD application needs with an MSD Heat HEI Ignition Module ¨C it¡¯s capable of generating an impressive 8.5 amps of juice.This top-notch replacement module mounts easily in your stock HEI housing or in MSD¡¯s pro-billet HEI distributor and features an externally settable and programmable rev limiter for over-rev protection. Also capable of improving your high RPM output thanks to an advanced dwell control, each module can use a GM coil. A tachometer is required to program the rev limit.Your MSD Heat HEI Ignition Module is protected by a limited warranty. Manufacturer InfoReturn Information