Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.4 cc Micro / Mini Sprint Suspension 94 in Features: Rated for

94 in Features: Rated for 170 - 200 HP 0

BBK EXHAUST IS BUILT WITH CNC MANDREL BENT 1-3/4 TUBING FOR 35% INCREASED FLOW OVER STOCK TO INCREASE HORSEPOWER

but the slots in the center of the crossmember will need to be elongated in the forward direction

1976-1979 Chevrolet P20

2005-2007 Workhorse LF72

Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.4 cc Micro / Mini Sprint Suspension 94 in Features: Rated forFully 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.