The Chevrolet Task Force followed the Advance Design beginning in late 1955 and ran through 1959. The Apache, Viking, and Spartan (light, medium, and heavy-duty, respectively) trucks were a big step forward with new offerings such as GM's first V8 engine and a 12-volt electrical system.

ACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire.