Three Step Module Selector - 8737 clutches-and-parts 7 V8 1968 - 1981

7 V8 1968 - 1981 Chevrolet C20 Suburban 1969 - 1982 Chevrolet C20 Suburban 292/4

7L V8 1976 GMC G35 Rally 350/5

header reducer cones or downpipes for factory manifolds

6 V8 1972 - 1976 Mercury Montego   400/6

Exit Style Dual Straight Passenger Side Rear Tip Material Stainless Steel Muffler Finish Polished Muffler Type Straight-Through Muffler Quantity 1 Type Cat-Back Inlet Connection Type Bolt-On

Three Step Module Selector - 8737 clutches-and-parts 7 V8 1968 - 1981Overview: As an example, we'll 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 activated during the burnout. This helps keep tire temperatures consistent. When the line lock button is released, the limit turns off. When you're on the starting