JE Pistons 258275 Forged Open Chamber Dome 4.500 Bore, Standard Deck

JE Pistons, BBC 509, Bore 4.500, Stroke 4.000, Rod Length 6.135, Dome +7cc, 672 Grams, Set of 8

Special Price $969.29 Regular Price $1,076.99

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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.

Description

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 10.2:1

118cc 9.6:1

124cc 9.2:1

Specifications

More Information
CNC Part Number	JE-258275
Price	$1,076.99
Manufacturer's Part Number	258275
Brands	JE
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chevy BB
Bore Size	4.500
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