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Manley 591440-1

4-Inch Bore Dome Piston SB-Chevy

Manley 591440-1

660-591440-1

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Manley 591440-1 4-Inch Bore Dome Piston SB-Chevy $90.99
4-Inch Bore Dome Piston
  • SB-Chevy
  • 11cc Symmetrical Dome
  • 4.040'' Bore (+.040'')
  • 6.000'' Rod Length
  • 3.750'' Stroke
  • 1.125'' Comp. Height
  • .043'', .043'', 3mm Ring Grooves
  • 1/pkg.

  • Manley 591440-1 Details

    Dome Pistons

  • Gas Ported .043'', .043'', 3mm Ring Grooves
  • 6.000'' Rod Length
  • 3.750'' Stroke
  • Technical Specs:
  • Compression Height: 1.125''
  • Compression Ratio: 14.9:1 w/ 58cc, 13.5:1 w/ 64cc, 11.5:1 w/ 76cc Combustion Chamber
  • Piston & Pin Weight: 586 grams
  • Dome Top: 11.0cc symmetrical design
  • Pin Size: 0.927'' dia., 2.300'' long, .150'' wall
  • Round Wire Locks: .061''
  • Ring Grooves: Gas Ported .043'' Top; .043'' Middle; 3mm Bottom
  • Piston Clearance: .005'' measured 1.100'' from bottom of the oil ring
  • Valve Notches: Two Intake Notches, .275'' deep

  • Specifications:

    Manufacturer's Part Number:
    591440-1

    Platinum Series Pistons

    Professional engine builders and elite tuners around the world are running Manley pistons for some very good reasons. Manley uses domestic 2618 high strength alloy forgings and unique (to Manley) fixturing allowing skirt turning / ring groove machining be performed in one single operation to ensure the ultimate ring groove to skirt squareness for better ring seal. Cam and barrel (skirt) profiles that make power but are friendly on the cylinder walls. Manley is well known for their high quality valvetrain components, but insiders also trust and use Manleys top quality pistons and connecting rods.

    Features:
  • Based on Standard 4.000'' bore block
  • 23° Head Applications
  • 2618 High Strength Alloy
  • Lightweight Design
  • Thick deck for high horsepower applications
  • Lateral Gas Ports on Pistons with .043/.043/3mm Rings
  • Round Wire Locks Included
  • Pressure Balance Groove
  • Perfect Ring Groove to Skirt Squareness
  • .927'' Dia. x 2.300'' Long x .150'' Wall Premium Chrome Moly Wrist Pin

    Piston Common Specs:
  • Compression Ratio: 14.9:1 w/ 58cc, 13.5:1 w/ 64cc, 11.5:1 w/ 76cc Combustion Chamber
  • Dome Volume: 11.0cc Symmetrical Dome
  • Crown Thickness: .200''
  • Ring Thickness: Top Ring - 1.5mm or .043'' Gas Ported (.225'' down); Second Ring - 1.5mm (Napier profile) or .043'' (taper face); Oil Ring - 3mm
  • Valve Notches: Two Intake Notches, .275'' deep
  • Maximum Valve Sizes: 2.150'' Intake
  • Valve Angle: 22°
  • Pin Included: Premium Chrome Moly .927'' dia., 2.300'' long, .150'' wall
  • Round Wire Locks: .061'' wide
  • Recommended Piston Clearance: .005'' measured 1.100'' from bottom of the oil ring

    Technical Note: Compression ratios are calculated at .005'' deck clearance, a 4.060'' head gasket I.D. with a .040'' compressed thickness.

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