HEI coil owners now have a choice to repltheir stock coil with the MSD high energy unitized coil for GM HEI distributors. This coil is a direct replacement of the stock coil and offers increased spark energy when used with the MSD HEI module, PN 83647. The coil features special low inductance, high temperature windings which charge faster to give you increased spark energy at higher RPM. The premium epoxy filled construction is designed to withstand harsh rapplications as well as the wear and tear that daily usage dishes out, and still deliver more spark energy to the spark plugs. Model # 8225 Features: The coil is a direct replacement of the stock coil and offers increased spark energy when used with the MSD HEI module, PN 83647 The coil features special low-inductance, high-temperature windings which charge faster to give you increased spark energy at high RPM OBD II and CARB approved and legal for use in all states Coil mounts directly in plof factory style with improved performance.
