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Sealed Power L2256F40 - Speed-Pro Powerforged Small Block Chevy Pistons

Sealed Power L2256F40 - Speed-Pro Powerforged Small Block Chevy Pistons

Sealed Power#844-L2256F40

350ci Stock-Type Piston, .040'' Overbore
  • Piston Dia.: 4.040''
  • Piston Top: Flat Top, 4-Valve Reliefs
  • Pressed Pin
  • Comp Ratio: 9.72:1 w/64cc Head, 8.62:1 w/76cc Head
  • Ring Grooves: 5/64'', 5/64'', 3/16''
  • Sold Each
    • Fits Applications:
    • 1967-1970
      CHEVROLET
      1980-1985
      CHEVROLET
      1969-1970
      GMC
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    Sealed Power L2256F40 - Speed-Pro Powerforged Small Block Chevy Pistons

    Speed-Pro developed Powerforged Pistons, and set the pace in powerforged technology. The high silicon VMS-75 alloy is found exclusively in pistons "powerforged" by Speed-Pro. Up to 3,000 tons of force forges aluminum slugs into the basic piston form, which creates a grain flow pattern in the structure providing excellent strength, ductility, and heat dissipation.

    Note: All compression ratios are approximate. They're figured with a gasket thickness representative of those commonly used.

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