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.
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Ford Stock-Type Pistons
Sealed Power L2488F-1
Sealed Power 1985-87 5.0L HO Stock-Type Piston, Standard bore Piston Dia.: 4.000"
$80.99
$48.16
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1985-87 5.0L HO Stock-Type Piston,Standard borePiston Dia.: 4.000'' Piston Top: Flat Top, 4-Valve Reliefs Pressed Pin Comp Ratio: 9.99:1 w/54.5cc Heads, 8.44:1 w/69cc Heads Ring Grooves: 1.5mm, 1.5mm, 4.0mm Sold as Each
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$80.99
$48.16
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Sealed Power L2488F20
Sealed Power 1985-87 5.0L HO Stock-Type Pistons, .020" Overbore Piston Dia.: 4.030"
$655.99
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1985-87 5.0L HO Stock-Type Pistons, .020" OverborePiston Dia.: 4.000'' Piston Top: Flat Top, 4-Valve Reliefs Pressed Pin Comp Ratio: 9.99:1 w/54.5cc Heads, 8.44:1 w/69cc Heads Ring Grooves: 1.5mm, 1.5mm, 4.0mm Set of 8
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$655.99
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Sealed Power L2488F30
Sealed Power 1985-87 5.0L HO Stock-Type Pistons, .030" Overbore Piston Dia.: 4.030"
$511.99
Ships on 08/20/20
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1985-87 5.0L HO Stock-Type Pistons, .030'' OverborePiston Dia.: 4.030'' Piston Top: Flat Top, 4-Valve Reliefs Pressed Pin Comp Ratio: 9.99:1 w/54.5cc Heads, 8.44:1 w/69cc Heads Ring Grooves: 1.5mm, 1.5mm, 4.0mm Set of 8
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$511.99
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Sealed Power L2488F30-1
Sealed Power 1985-87 5.0L HO Stock-Type Piston, .030" Overbore Piston Dia.: 4.030"
$63.99
$44.64
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1985-87 5.0L HO Stock-Type Piston, .030'' OverborePiston Dia.: 4.030'' Piston Top: Flat Top, 4-Valve Reliefs Pressed Pin Comp Ratio: 9.99:1 w/54.5cc Heads, 8.44:1 w/69cc Heads Ring Grooves: 1.5mm, 1.5mm, 4.0mm Sold as Each
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$63.99
$44.64
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Sealed Power L2488F40
Sealed Power 1985-87 5.0L HO Stock-Type Pistons, .040" Overbore Piston Dia.: 4.040"
$655.99
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1985-87 5.0L HO Stock-Type Pistons, .040'' OverborePiston Dia.: 4.040'' Piston Top: Flat Top, 4-Valve Reliefs Pressed Pin Comp Ratio: 10.3:1 w/54.5cc Heads, 8.48:1 w/69cc Heads Ring Grooves: 1.5mm, 1.5mm, 4.0mm Set of 8
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$655.99
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$289.99
$272.27
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302ci Stock-Type Pistons, .030'' OverborePiston Dia.: 4.030'' Piston Top: -2.7cc Dish, 4-Valve Reliefs Pressed Pin Comp Ratio: 9.42:1 w/60.4cc Heads, 8.55:1 w/69cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$289.99
$272.27
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$36.99
$34.03
SAVE $2.96
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302ci Stock-Type Piston, .030'' OverborePiston Dia.: 4.030'' Piston Top: -2.7cc Dish, 4-Valve Reliefs Pressed Pin Comp Ratio: 9.42:1 w/60.4cc Heads, 8.55:1 w/69cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Sold as Each
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$36.99
$34.03
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$455.99
Ships on 08/17/20
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302ci Stock-Type Pistons, .040'' OverborePiston Dia.: 4.040'' Piston Top: -2.7cc Dish, 4-Valve Reliefs Pressed Pin Comp Ratio: 9.42:1 w/60.4cc Heads, 8.55:1 w/69cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$455.99
Ships on 08/17/20
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$599.99
Ships on 09/01/20
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302ci Stock-Type Pistons, .060'' OverborePiston Dia.: 4.060'' Piston Top: -2.7cc Dish, 4-Valve Reliefs Pressed Pin Comp Ratio: 10.14:1 w/54.5cc Heads, 8.55:1 w/69cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$599.99
Ships on 09/01/20
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$296.99
Ships on 08/18/20
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351C Stock-Type Pistons, .030'' OverborePiston Dia.: 4.030'' Piston Top: Flat Top, 2-Valve Reliefs Pressed Pin Comp Ratio: 10.76:1 w/58.6cc Heads, 8.90:1 w/76.2cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$296.99
Ships on 08/18/20
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$37.99
$35.31
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351C Stock-Type Piston, .030'' OverborePiston Dia.: 4.030'' Piston Top: Flat Top, 2-Valve Reliefs Pressed Pin Comp Ratio: 10.76:1 w/58.6cc Heads, 8.90:1 w/76.2cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Sold as Each
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$37.99
$35.31
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$615.99
Ships on 08/17/20
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351C Stock-Type Pistons, .040'' OverborePiston Dia.: 4.040'' Piston Top: Flat Top, 2-Valve Reliefs Pressed Pin Comp Ratio: 10.76:1 w/58.6cc Heads, 8.90:1 w/76.2cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$615.99
Ships on 08/17/20
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$483.99
Ships on 08/24/20
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351W Stock-Type Pistons, .030'' OverborePiston Dia.: 4.030'' Piston Top: -13.2cc Dish Pressed Pin Comp Ratio: 9.30:1 w/60.4cc Heads, 9.08:1 w/69cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$483.99
Ships on 08/24/20
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$61.99
$43.47
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351W Stock-Type Piston, .030'' OverborePiston Dia.: 4.030'' Piston Top: -13.2cc Dish Pressed Pin Comp Ratio: 9.30:1 w/60.4cc Heads, 9.08:1 w/69cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Sold as Each
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$61.99
$43.47
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$631.99
Ships on 08/17/20
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351W Stock-Type Pistons, .040'' OverborePiston Dia.: 4.040'' Piston Top: -13.2cc Dish Pressed Pin Comp Ratio: 9.30:1 w/60.4cc Heads, 9.08:1 w/69cc Heads Ring Grooves: 1/16'', 1/16'', 3/16'' Set of 8
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$631.99
Ships on 08/17/20
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$345.99
Ships on 08/20/20
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390ci Stock-Type Pistons, Standard BorePiston Dia.: 4.050'' Piston Top: Flat Top, 4-Valve Reliefs Pressed or Floating Pin Comp Ratio: 10.00:1 w/67.1cc Heads, 9.91:1 w/68.0cc Heads Ring Grooves: 5/64'', 3/32'', 3/16'' Set of 8
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$345.99
Ships on 08/20/20
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$372.99
Ships on 08/17/20
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390ci Stock-Type Pistons, .030'' OverborePiston Dia.: 4.080'' Piston Top: Flat Top, 4-Valve Reliefs Pressed or Floating Pin Comp Ratio: 10.00:1 w/67.1cc Heads, 9.91:1 w/68.0cc Heads Ring Grooves: 5/64'', 3/32'', 3/16'' Set of 8
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$372.99
Ships on 08/17/20
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$54.99
$40.28
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390ci Stock-Type Piston, .030'' OverborePiston Dia.: 4.080'' Piston Top: Flat Top, 4-Valve Reliefs Pressed or Floating Pin Comp Ratio: 10.00:1 w/67.1cc Heads, 9.91:1 w/68.0cc Heads Ring Grooves: 5/64'', 3/32'', 3/16'' Sold as Each
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$54.99
$40.28
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$499.99
Ships on 08/17/20
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428ci Stock-Type PistonsPiston Dia.: 4.130'' Piston Top: -10.3cc Dish, 4-Valve Reliefs Floating Pin Comp Ratio: 10.66:1 w/68cc Heads, 10.07:1 w/74cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$499.99
Ships on 08/17/20
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$599.99
Ships on 08/17/20
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428ci Stock-Type Pistons, .030'' OverborePiston Dia.: 4.160'' Piston Top: -10.3cc Dish, 4-Valve Reliefs Floating Pin Comp Ratio: 10.66:1 w/68cc Heads, 10.07:1 w/74cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$599.99
Ships on 08/17/20
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Sealed Power L2303NF40-1
Sealed Power Powerforged Forged Piston Ford FE 428ci Bore: 4.170'' (+.040")
$63.99
$50.38
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Powerforged Forged PistonFord FE 428ci Bore: 4.170'' (+.040") Head Type: Dish, 4-Valve Reliefs (-10.3cc) Comp Ratio: 10.66:1 w/68cc Heads, 10.07:1 w/74cc Heads Ring Grooves: 5/64'', 5/64'', 3/16' 1/Pkg
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$63.99
$50.38
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$450.99
Ships on 08/18/20
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428ci Stock-Type Pistons, .060'' OverborePiston Dia.: 4.190'' Piston Top: -10.3cc Dish, 4-Valve Reliefs Floating Pin Comp Ratio: 10.66:1 w/68cc Heads, 10.07:1 w/74cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$450.99
Ships on 08/18/20
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$488.99
Ships on 08/17/20
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429ci Stock-Type Pistons, .030'' OverborePiston Dia.: 4.390'' Piston Top: Flat Top, 1-Valve Reliefs Pressed or Floating Pin Comp Ratio: 11.00:1 w/72cc Heads, 9.23:1 w/92.0cc Heads Ring Grooves: 5/64'',5/64'', 3/16'' Set of 8
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$488.99
Ships on 08/17/20
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$511.99
Ships on 09/01/20
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429ci Stock-Type Pistons, .040'' OverborePiston Dia.: 4.400'' Piston Top: Flat Top, 1-Valve Reliefs Pressed or Floating Pin Comp Ratio: 11.00:1 w/72cc Heads, 9.23:1 w/92.0cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$511.99
Ships on 09/01/20
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$63.99
$50.38
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429ci Stock-Type Piston, .040'' OverborePiston Dia.: 4.400'' Piston Top: Flat Top, 1-Valve Reliefs Pressed or Floating Pin Comp Ratio: 11.00:1 w/72cc Heads, 9.23:1 w/92.0cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Sold as Each
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$63.99
$50.38
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$81.99
$48.62
SAVE $33.37
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460ci Stock-Type Piston, .030'' OverborePiston Dia.: 4.390'' Piston Top: -22cc Dish Pressed Pin Comp Ratio: 9.79:1 w/72cc Heads, 8.01:1 w/97cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Sold as Each
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$81.99
$48.62
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$76.99
Ships on 08/18/20
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460ci Stock-Type Piston, .040'' OverborePiston Dia.: 4.400'' Piston Top: -22cc Dish Pressed Pin Comp Ratio: 9.37:1 w/72cc Heads, 7.86:1 w/97cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Sold as Each
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$76.99
Ships on 08/18/20
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$57.99
$43.31
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460ci Stock-Type Piston, .060'' OverborePiston Dia.: 4.420'' Piston Top: -22cc Dish Pressed Pin Comp Ratio: 9.79:1 w/72cc Heads, 8.01:1 w/97cc Heads Ring Grooves: 5/64'', 5/64'', 3/16'' Sold as Each
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$57.99
$43.31
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$599.99
Ships on 08/17/20
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PistonsSB-Ford Piston Dia.: 4.000'' Piston Top: -2.7, Flat 4-Valve Reliefs Pressed Pin Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$599.99
Ships on 08/17/20
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$455.99
Ships on 08/17/20
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PistonsSB-Ford Piston Dia.: 4.000'', .020 Overbore Piston Top: -2.7, Flat 4-Valve Reliefs Pressed Pin Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$455.99
Ships on 08/17/20
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