HP Copper Spark Plug - 0526-4 oil-dipsticks These modular LS valve covers

These modular LS valve covers feature an OE height

Max Dyno Gains of 10 hp and 13 lb

Fabricated aluminum construction designed to mount on our existing Hi-Ram manifold bases

screw in air bleeds for easy fine tuning

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

HP Copper Spark Plug - 0526-4 oil-dipsticks These modular LS valve coversOverview: 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