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JE 257947 Forged 7.6:1 Dish Pistons 4.500 Bore, BB Chevy 509

SKU: JE-257947_1

Big Block Chevy 509, Bore 4.500, Stroke 4.000, Rod Length 6.385, Inverted Dome -28cc, 591 Grams, Set of 8

Availability: In stock

$754.13
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These big block pistons are compatible with forced induction, nitrous and angle milled heads. The inverted dome shape has been designed for maximum efficiency and horsepower. Valve reliefs will accommodate oversized valves and long duration, tight lobe separation cams.Compression Height figured using 9.780 block height with zero deck clearance. Precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings. Will fit both open and closed chamber cylinder heads.

Includes:

  • Pin #990-2930-18-51S (174g)
  • Double spiro locks (#990-042-CS)

    Compression Ratio:
  • 110cc 8.0:1
  • 118cc 7.6:1
  • 124cc 7.4:1
  • Toggle Full Description
    • Order Line
      800-341-1528

    • We Ship
      Worldwide

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      paypal accepted

    • Manufacturer
      JE
    • Vehicle Make
      Chevy BB
    • Bore Size
      4.500
    • Crankshaft Stroke
      4.000
    • Rod Length
      6.385
    • Piston Type
      Dish/Inverted Dome
    • Compression Height
      1.395
    • Piston Material
      2618 Forged
    • Piston Ring Size
      1/16 1/16 3/16
    • Wrist Pin Size
      0.990

    Details

    These big block pistons are compatible with forced induction, nitrous and angle milled heads. The inverted dome shape has been designed for maximum efficiency and horsepower. Valve reliefs will accommodate oversized valves and long duration, tight lobe separation cams.Compression Height figured using 9.780 block height with zero deck clearance. Precision CNC machined ring grooves accept 1/16, 1/16, 3/16 rings. Will fit both open and closed chamber cylinder heads.

    Includes:

  • Pin #990-2930-18-51S (174g)
  • Double spiro locks (#990-042-CS)

    Compression Ratio:
  • 110cc 8.0:1
  • 118cc 7.6:1
  • 124cc 7.4:1
  • Additional Information

    Manufacturer JE
    Vehicle Make Chevy BB
    Bore Size 4.500
    Crankshaft Stroke 4.000
    Rod Length 6.385
    Piston Type Dish/Inverted Dome
    Compression Height 1.395
    Piston Material 2618 Forged
    Piston Ring Size 1/16 1/16 3/16
    Wrist Pin Size 0.990
    List price No