Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 2.7 cc Distributor Collar Royal Purple(R) Max ATF is

Royal Purple(R) Max ATF is fully compatible and can be mixed with other automatic transmission fluids

780 in Rectangular Port

Chevy applications use a

Valves work with Allstar Performance center reliefs and other popular plastic or aluminum quick disconnect fittings

Integrated Optics - Spot

Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 2.7 cc Distributor Collar Royal Purple(R) Max ATF isFully updated skirt profiles Exclusive DUROSHIELD skirt coating. DUROSHIELD provides scuff resistance, reduced bore clearances and enhanced ring sealing. SPEED PRO POWERFORGED pistons are built to stringent specifications with a precision CNC machined dome and skirts and microfinished ring grooves. The manufacturing process ensures that piston weights within a boxed set will not vary more than 4 grams and that skirt sizes are matched to within 0.