Speed Pro Speed Pro Piston Forged 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 0.0 cc YA0828KARTMM13 1954-1957 Oldsmobile 88

1954-1957 Oldsmobile 88

we use our exclusive two-step slow forging process using EV8 stainelss steel on both intake and exhaust valves

F-Body inlet/outlet location

Spec-Pro Speedometers / Tachometers

Speed Pro Speed Pro Piston Forged 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 0.0 cc YA0828KARTMM13 1954-1957 Oldsmobile 88Fully 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.