Speed Pro Speed Pro Piston Forged 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 36.3 cc AS05321 Includes Mounting Screw

Includes Mounting Screw

When activated

MSD Pro-Billet Distributor 8517 Includes Cap/Race Rotor - Use w/MSD 6/7/8/10 Series Ignition - w/o Vacuum Advance

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1961-1967 Chevrolet P30 Series

Speed Pro Speed Pro Piston Forged 4.280" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Plus 36.3 cc AS05321 Includes Mounting ScrewFully 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.