
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 L2488F30
Sealed Power 1985-87 5.0L HO Stock-Type Pistons, .030" Overbore Piston Dia.: 4.030"
$592.99
Ships on 05/26/22
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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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$592.99
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Sealed Power L2488F40
Sealed Power 1985-87 5.0L HO Stock-Type Pistons, .040" Overbore Piston Dia.: 4.040"
$756.99
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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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$756.99
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$416.99
$270.17
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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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$416.99
$270.17
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$416.99
Ships on 05/26/22
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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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$416.99
Ships on 05/26/22
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$416.99
Ships on 05/26/22
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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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$416.99
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$449.99
Ships on 06/15/22
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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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$449.99
Ships on 06/15/22
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$679.99
Ships on 05/26/22
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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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$679.99
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$454.99
Ships on 06/09/22
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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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$454.99
Ships on 06/09/22
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$432.99
Ships on 05/26/22
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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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$432.99
Ships on 05/26/22
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$34.99
$31.79
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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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$34.99
$31.79
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$694.99
Ships on 05/26/22
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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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$694.99
Ships on 05/26/22
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$549.99
Ships on 05/26/22
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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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$549.99
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$549.99
Ships on 06/13/22
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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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$549.99
Ships on 06/13/22
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$664.99
Ships on 05/26/22
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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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$664.99
Ships on 05/26/22
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$504.99
Ships on 05/26/22
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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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$504.99
Ships on 05/26/22
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