Speed Pro Speed Pro Piston Forged 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 25.7 cc R03J015XXL (1) AN-10 to (2) AN-10

(1) AN-10 to (2) AN-10 Male Flare Y-Block

1979-1984 Chevrolet Monte Carlo

2 Ear Mount

Comes with brass bushings and stainless hardware for easy installation

438 in Long

Speed Pro Speed Pro Piston Forged 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 25.7 cc R03J015XXL (1) AN-10 to (2) AN-10Fully 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.