than standard small-block chevy heads · spark plugs positioned closer to the center ... their smaller runner volumes increased torque by over 40 ft/lbs at 4,000 rpm but ... lower rpm we think this combination of torque hp and the driveability it would ... valves you will be using · recommended spark plugs for most street applications are ... champion rc12yc not legal for sale or use on pollution ...
engine 12.5:1 compression 464 ft/lbs of torque and 540 hp 31 hp more than the leading ... exhaust ports for maximum power angled plugs for maximum performance pro-port raw ... valves you will be using · recommended spark plugs for most street applications are ... champion rc12yc except ls series heads not legal for ...