JE Pistons 257665 Forged 460 Flat Top M-6049-SCJ 4.390 Bore

JE Pistons, BBF 520/ 545, Bore 4.390, Stroke 4.300/ 4.500, Rod Length 6.800/ 6.700, Flat Top -5.0cc, 554 Grams, Set of 8

$1,016.99

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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.

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Description

JE pistons are specifically designed for the latest aftermarket blocks and heads, these pistons are for the use with the 427 or the 428 crank and aftermarket 4.250" crank with aftermarket 6.700" rod. The factory block should be sonic checked for 4.280" and 4.310" bores. These pistons use 1/16, 1/16, 3/16 rings. The compression ratios are figured for 10.150 block height. Larger bore sizes are available as customs, call JE for details.

Includes:

Pin #990-2930-18-51S (174g)

Double spiro locks (#990-042-CS)

Compression Ratio:

72cc 13.2:1

Specifications

More Information
CNC Part Number	JE-257665
Price	$1,016.99
Sold As	Set
Manufacturer's Part Number	257665
Brands	JE
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Ford BB
Bore Size	4.390
Crankshaft Stroke	4.300, 4.500
Rod Length	6.700, 6.800
Piston Type	Flat Top
Compression Height	1.350
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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