This Wiseco RED Series piston set is forged from 2618 aluminum for Chevy Small Block 400 engines with 23 Degree cylinder heads. Each of the 8 pistons has a 4.165 in. bore and a 1.425 in. compression height with a -21cc dish. RED Series pistons are built for popular domestic V8 platforms used in drag racing, circle track and power adder engines.

Wiseco RED0021X4 Piston Set Features:

• Made for Chevy Small Block 400 engines with 23 Degree cylinder heads
• 4.165 in. bore diameter with a 1.425 in. compression height
• -21cc dish volume
• Sized for a 3.750 in. stroke and 5.700 in. connecting rod length
• Forged from 2618 aluminum alloy with a strutted forging design
• ArmorGlide skirt coating for reduced friction, scuff resistance and quieter operation
• 0.927 in. 5115 Steel floating wrist pin included
• Piston rings included: 1.20 mm top, 1.20 mm second and 3.00 mm oil ring
• Dedicated engine-specific strutted forging for strength-to-weight
• Horizontal slot oiling in the pin bores lubricates the wrist pin and rod small end
• Accumulator groove helps hold a consistent ring seal
• Set of 8 pistons