Seller notes

MSD Ignition Module 83647; Replacement HEI Module w/Rev-Limiter for 1973-1979 GMDistributor Ignition Module Model or Series: Replacement HEI Module with Rev LimiterYear: 1973 to 1979Make: GMMultiple Spark: NoLobe Sensor: NoIncludes Rev Limiter: YesCompatible w/ CD Ignition Boxes: NoFits Distributor(s): HEIQuantity: Sold As Each Easily installs to non-computer controlled (4-Pin) HEI housingsBuilt-in adjustable rev limiter can easily be set externallyAdvanced dwell control for improved high rpm ou...

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