This is a "Race" only Flamethrower HEI distributor from Pertronix. All new parts are used, and includes a 7.2 amp module and matching 50,000 volt coil. They are designed to operate in the 6500-8500 rpm range. It comes with a steel gear and does not have vacuum advance (includes an assortment of springs for mechanical advance).
Compared to standard HEI distributors, this race unit produces 42% more energy with 46% faster spark breakdown time, allowing 48% more peak current to reach the spark plug. This abundant energy doubles the spark intensity during the critical one millisecond of burn time.
Fits both the Small Block and Big Block Chevy V-8.
447-1071 Instructions (PDF)