HP Copper Spark Plug - 0526-4 oil-dipsticks Max Dyno Gains of 10

Max Dyno Gains of 10 hp and 13 lb

4 V8 1968 - 1970 Chevrolet K10 Pickup 307/5 V8 1968 - 1969 Chevrolet K10 Pickup

1977-1979 Pontiac Ventura

The 351W manifold is available to work with 105MM GM LS throttle bodies

HP Copper Spark Plug - 0526-4 oil-dipsticks Max Dyno Gains of 10Overview: 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. ACCEL HP Spark Plugs are gapable allowing you to open the gap exposing a larger flame kernel or close it if needed for