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Speed-Pro Powerforged Pontiac Pistons


Sealed Power
Speed-Pro Powerforged Pontiac Pistons

Product images may differ from actual product appearance.

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 improved heat dissipation.

Please Note: All compression ratios are figured with a gasket thickness representative of those commonly used and are approximate.


5 Products
Pontiac Performance Pistons

844-L2359NF30
455ci Performance Pistons, .030'' Overbore
  • Piston Dia.: 4.181''
  • Piston Top: -6.70cc Flat, 4-Valve Reliefs
  • Pressed Pin
  • Comp Distance: 1.497''
  • Ring Grooves: 5/64'', 1/16'', 3/16''
  • Sold as Each
  • $83.99
    Ships

    844-L2359NF40
    455ci Performance Pistons, .040'' Overbore
  • Piston Dia.: 4.111''
  • Piston Top: -6.70cc Flat, 4-Valve Reliefs
  • Pressed Pin
  • Comp Distance: 1.497''
  • Ring Grooves: 5/64'', 1/16'', 3/16''
  • Sold as Each
  • $83.99
    Ships
    Pontiac Stock-Type Pistons

    844-L2262F30
    400ci Stock-Type Piston, .030'' Overbore
  • Piston Dia.: 4.150''
  • Piston Top: -6.7cc Dish, 4-Valve Reliefs
  • Pressed Pin
  • Comp Ratio: 10.24:1 w/69cc Heads, 7.16:1 w/114cc Heads
  • Ring Grooves: 5/64'', 5/64'', 3/16''
  • Sold as Each
  • $50.99
    Order Today Ships 10/30/14

    844-L2262F40
    400ci Stock-Type Piston, .040'' Overbore
  • Piston Dia.: 4.160''
  • Piston Top: -6.7cc Dish, 4-Valve Reliefs
  • Pressed Pin
  • Comp Ratio: 10.24:1 w/69cc Heads, 7.16:1 w/114cc Heads
  • Ring Grooves: 5/64'', 5/64'', 3/16''
  • Sold as Each
  • $50.99
    Order Today Ships 10/30/14

    844-L2262F60
    400ci Stock-Type Piston, .060'' Overbore
  • Piston Dia.: 4.180''
  • Piston Top: -6.7cc Dish, 4-Valve Reliefs
  • Pressed Pin
  • Comp Ratio: 10.24:1 w/69cc Heads, 7.16:1 w/114cc Heads
  • Ring Grooves: 5/64'', 5/64'', 3/16''
  • Sold as Each
  • $50.99
    Ships

    5 Products