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Part Number:
JE-258278

JE Pistons 258278 Forged Open Chamber Dome 4.350 Bore, Standard Deck

JE Pistons, BBC 469, Bore 4.320, Stroke 4.000, Rod Length 6.135, Dome +43cc, 630 Grams, Set of 8

Special Price $987.29 Regular Price $1,096.99
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⚠ PROP 65 WARNING
⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.
JE Pistons for big blocks engines are compatible with forced induction, nitrous, and angle milled heads. Valve reliefs will accommodate oversized valves and long duration, tight lobe separation cams. Compression Height figured using 10.180" 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 spiral locks (#990-042-CS)

    Compression Ratio:
  • 110cc 13.6:1
  • 118cc 12.4:1
  • 124cc 11.6:1
    Note: *Made to order.*
  • More Information
    CNC Part Number JE-258278
    Price $1,096.99
    Manufacturer's Part Number 258278
    Brands JE
    Part Types Engine Piston
    Departments Parts
    Vehicle Make Chevy BB
    Bore Size 4.320
    Crankshaft Stroke 4.000
    Rod Length 6.135
    Piston Type Dome
    Compression Height 1.645
    Piston Material 2618 Forged
    Piston Ring Size 1/16 1/16 3/16
    Wrist Pin Size 0.990
    Custom Notices ⚠ PROP 65 WARNING

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