Speed Pro Forged Piston Set - 4.030" Bore - 5/64 x 5/64 x 3/16" Ring Grooves - Plus 5.3 cc - Coated Skirt - SB Chevy (Set of 8) M61HAK Application specific design to ensure

Application specific design to ensure a perfect fit and correct operation for unsurpassed quality that you can trust

or vehicles with modern EFI engine swaps

4L (will not work with Low mount A/C) ΓÇó Holley Mid-Mount Accessory Drive Systems Use with Headers: BH23104

1971-1988 Pontiac Bonneville

Use JOES Wheel Spacers to push the rules right to the limit by getting your track width as wide as possible

Speed Pro Forged Piston Set - 4.030" Bore - 5/64 x 5/64 x 3/16" Ring Grooves - Plus 5.3 cc - Coated Skirt - SB Chevy (Set of 8) M61HAK Application specific design to ensureFully 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.