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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Small Block Chevy Lightweight Series
$535.99
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350ci Performance Pistons, .030'' OverborePiston Dia.: 4.030'' .190 Dome w/2 relief valves Press or Floating Pin Comp Ratio: 11.67:1 w/58cc Head,9.44:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 501 Grams 6.0" Rod Set of 8
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$535.99
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$535.99
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350ci Performance Pistons, .030'' OverborePiston Dia.: 4.030'' Flat Top w/2 relief valves Press or Floating Pin Comp Ratio: 10.20:1 w/58cc Head,8.49:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 470 Grams 6.0" Rod Set of 8
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$535.99
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$494.99
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350ci Performance Piston, .040'' OverborePiston Dia.: 4.040'' .350 Dome w/2 relief valves Press or Floating Pin Comp Ratio: 12.07:1 w/64cc Head,10.87:1 w/72cc Head Ring Grooves: 1/16", 1/16", 3/16" 505 Grams 6.0" Rod Sold Eac
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$494.99
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$535.99
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350ci Performance Pistons, .040'' OverborePiston Dia.: 4.040'' Flat Top w/2 relief valves Press or Floating Pin Comp Ratio: 10.24:1 w/58cc Head,8.53:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 474 Grams 6.0" Rod Set of 8
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$535.99
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$535.99
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350ci Performance Pistons, .060'' OverborePiston Dia.: 4.060'' Flat Top w/2 relief valves Press or Floating Pin Comp Ratio: 10.32:1 w/58cc Head,8.60:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 485 Grams 6.0" Rod Set of 8
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$535.99
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$535.99
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383ci Performance Piston, .030'' OverborePiston Dia.: 4.030'' Dish w/4 relief valves Press or Floating Pin Comp Ratio: 9.65:1 w/58cc Head,8.21:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 442 Grams 6.0" Rod Sold Each
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$535.99
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$535.99
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383ci Performance Pistons, .030'' OverborePiston Dia.: 4.030'' .088 Dome w/2 relief valves Press or Floating Pin Comp Ratio: 12.02:1 w/58cc Head,9.79:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 461 Grams 6.0" Rod Set of 8
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$535.99
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$535.99
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383ci Performance Pistons, .040'' OverborePiston Dia.: 4.040'' .088 Dome w/2 relief valves Press or Floating Pin Comp Ratio: 12.07:1 w/58cc Head,9.84:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 464 Grams 6.0" Rod Set of 8
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$535.99
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$535.99
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383ci Performance Pistons, .040'' OverborePiston Dia.: 4.040'' .Flat Top w/2 relief valves Press or Floating Pin Comp Ratio: 11.23:1 w/58cc Head,9.29:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 449 Grams 6.0" Rod Set of 8
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$535.99
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$535.99
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383ci Performance Pistons, .060'' OverborePiston Dia.: 4.060'' .088 Dome w/2 relief valves Press or Floating Pin Comp Ratio: 12.17:1 w/58cc Head,9.92:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 476 Grams 6.0" Rod Set of 8
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$535.99
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$535.99
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383ci Performance Pistons, .060'' OverborePiston Dia.: 4.060'' .Flat Top w/2 relief valves Press or Floating Pin Comp Ratio: 11.32:1 w/58cc Head,9.37:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 460 Grams 6.0" Rod Set of 8
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$535.99
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$72.99
$49.21
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$72.99
$49.21
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$599.99
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350ci Performance Piston, .060'' OverborePiston Dia.: 4.060'' Dish w/2 relief valves Press or Floating Pin Comp Ratio: 8.97:1 w/64cc Head Ring Grooves: 1/16", 1/16", 3/16" 503 Grams 5.7" Rod Sold Each
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$599.99
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SB-Chevy: 350
Stock type piston with 4-valve reliefs and pressed pin. Compression ratios: - 9.72:1 w/std. stroke & rods, 64cc head
- 8.62:1 w/std. stroke & rods, 76cc head
$55.99
$42.14
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Lightweight +.040'', Each
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$55.99
$42.14
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Small Block Chevy Lightweight Series
$496.99
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383ci Performance Pistons, .030'' OverborePiston Dia.: 4.030'' .Flat Top w/2 relief valves Press or Floating Pin Comp Ratio: 11.18:1 w/58cc Head,9.25:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 445 Grams 6.0" Rod Set of 8
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$496.99
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$65.99
$47.11
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383ci Performance Piston, .030'' OverborePiston Dia.: 4.030'' .Flat Top w/2 relief valves Press or Floating Pin Comp Ratio: 11.18:1 w/58cc Head,9.25:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 445 Grams 6.0" Rod Sold Each
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$65.99
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$535.99
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383ci Performance Pistons, .040'' OverborePiston Dia.: 4.040'' Dish w/4 relief valves Press or Floating Pin Comp Ratio: 9.69:1 w/58cc Head,8.25:1 w/76cc Head Ring Grooves: 1.5mm, 1.5mm, 3.0mm 446 Grams 6.0" Rod Set of 8
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$535.99
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Small Block Chevy Performance Pistons
$517.99
Ships on 02/16/21
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302ci Performance Pistons, .030'' OverborePiston Dia.: 4.030'' Piston Top: 15.4cc Dome Pressed or Floating Pin Ring Grooves: 1/16'', 1/16'', 1/8'' Set of 8
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$517.99
Ships on 02/16/21
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$471.99
Ships on 01/27/21
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350ci Performance Pistons.030'' OverborePiston Dia.: 4.030'' Piston Top: 2.4cc Dome Press Pin Comp Ratio: 11.40:1 w/58cc Head, 9.31:1 w/76cc Head Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$471.99
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$591.99
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350ci Performance Pistons, .060'' OverborePiston Dia.: 4.060'' Piston Top: .220'' Dome w/2 relief valves Press or Floating Pin Comp Ratio: 12.94:1 w/58cc Head, 10.22:1 w/76cc Head Ring Grooves: 1/16'', 1/16'', 1/8'' Set of 8
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$591.99
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$375.99
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350ci Performance Pistons0.060'' Overbore Piston Dia.: 4.060'' Piston Top: 2.4cc Dome Press Pin Comp Ratio: 11.55:1 w/58cc Head, 9.43:1 w/76cc Head Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$375.99
Ships on 01/27/21
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Sealed Power L2491NF40
Sealed Power Pistons 383ci Stroker Engines, .040" Overbore Piston Dia.: 4.040"
$591.99
$395.52
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Pistons 383ci Stroker Engines, .040'' OverborePiston Dia.: 4.040'' Piston Top: Flat, 2-Valve Reliefs Press or Floating Pin Comp Ratio: 11.55:1 w/58cc Head, 9.49:1 w/76cc Head Ring Grooves: 1/16'', 1/16'', 3/16'' Set of 8
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$591.99
$395.52
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Small Block Chevy Stock-Type Pistons
$261.99
Ships on 02/25/21
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327ci Stock Type PistonsPiston Dia: 4.000'' Piston Top: .125'' Flat Top, 4-Valve Reliefs Pressed Pin Comp Ratio: 9.32:1 w/64cc Head Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$261.99
Ships on 02/25/21
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Sealed Power L2165F20
Sealed Power Powerforged Stock Type Pistons Small Block Chevy 327 [4.020 in. .020 Over]
$599.99
Ships on 01/27/21
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Powerforged Stock Type PistonsSmall Block Chevy 327 ci Bore Size: 4.020 in., (+.020 in. Over) Flat Top w/ 4-Valve Reliefs Pressed Pin Comp Ratio: 9.32:1 w/64 cc Head Ring Grooves: 5/64, 5/64, 3/16 in. Set of 8
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$599.99
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Sealed Power L2165F30
Sealed Power Powerforged Stock Type Pistons Small Block Chevy 327 [4.030 in. .030 Over]
$599.99
Ships on 01/26/21
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Powerforged Stock Type PistonsSmall Block Chevy 327 ci Bore Size: 4.030 in., (+.030 in. Over) Flat Top w/ 4-Valve Reliefs Pressed Pin Comp Ratio: 9.32:1 w/64 cc Head Ring Grooves: 5/64, 5/64, 3/16 in. Set of 8
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$599.99
Ships on 01/26/21
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$703.99
Ships on 01/27/21
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327ci Stock Type Pistons, Standard BorePiston Dia: 4.000'' Piston Top: .125'' Dome with 2-Valve Reliefs Pressed Pin Comp Ratio: 10.35:1 w/64cc Head Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$703.99
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$86.99
$51.21
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327ci Stock Type Piston, +.020 in. Over BorePiston Dia: 4.020 in. Piston Top: .125'' Dome with 2-Valve Reliefs Pressed Pin Comp Ratio: 10.35:1 w/64cc Head Ring Grooves: 5/64'', 5/64'', 3/16'' Sold Each
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$86.99
$51.21
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$388.99
Ships on 01/27/21
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327ci Stock Type Pistons, .040'' OverborePiston Dia: 4.040'' Piston Top: .125'' Dome with 2-Valve Reliefs Pressed Pin Comp Ratio: 10.40:1 w/64cc Head Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$388.99
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$495.99
Ships on 01/29/21
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327ci Stock Type Pistons, .060'' OverborePiston Dia: 4.060'' Piston Top: .125'' Dome with 2-Valve Reliefs Pressed Pin Comp Ratio: 10.48:1 w/64cc Head Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$495.99
Ships on 01/29/21
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$343.99
Ships on 01/27/21
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350ci Stock Type PistonsPiston Dia.: 4.000'' Piston Top: Flat Top, 4-Valve Reliefs Pressed Pin Comp Ratio: 10.4:1 w/58cc Head, 9.72:1 w/64cc Head Ring Grooves: 5/64'', 5/64'', 3/16'' Set of 8
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$343.99
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