MSD RPM Three Step Module Selector NG278 Machined from AMPCO 45 aluminum

Machined from AMPCO 45 aluminum bronze containing 5% nickel

Square Port

GPS Antenna

Also fits Chevrolet Camaro

especially in race applications where a Hydraulic lifter must be used

MSD RPM Three Step Module Selector NG278 Machined from AMPCO 45 aluminumThe MSD Module Selectors allow you to choose two or three different rpm limits that can be activated at different times. With this ability, the possibilities are endless. As an example, well use a drag car with a Three Step Module Selector plugged into the rpm socket of a 7AL 2 Ignition. The different rpm modules are activated when 12 volts are applied to a corresponding wire. By connecting one wire to the line lock circuit, one module will be