JE Pistons 311910 GM LS7 Asymmetrical FSR Flat Top 4.1275 Bore

LS7 438 JE Pistons 12-15 degree Asymmetrical, Extreme Duty FSR, Bore 4.1275, Stroke 4.100, Rod Length 6.125, Flat Top -2cc, 413g, Set of 8 Pistons. Rings not included. Accepts nitrous.

$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 new LS7 flat top asymmetrical FSR (Forged Side Relief) forging design allows for the use of the most popular stroke and rod combinations while eliminating reluctor wheel clearance problems. Asymmetrical forging design maintains a larger skirt on the heavily stressed major thrust side, while reducing friction with a smaller skirt on the minor thrust side. The result is a high strength, lightweight piston that significantly reduces friction in your engine. Lightweight and extremely durable, JE pistons are machined for 1.2mm, 1.5mm, 3.0mm rings. (CR calculated with .040 gasket thickness and 0.00" deck clearance). STOCK ROD MUST BE HONED TO ACCEPT .927" DIA PIN. MILLING OF ROD BALANCE PAD MAY BE NEEDED DUE TO VARIATION FROM FACTORY.

Includes:

Accumulator Grooves

Double Pin Oilers

Offset Wrist Pin

Pin 927-2250-15-51C (106g)

Round Wire Locks 927-073-MW

Compression Ratio:

70cc 12.0:1

Specifications

More Information
CNC Part Number	JE-311910
Price	$1,016.99
Sold As	Set
Manufacturer's Part Number	311910
Brands	JE
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chevy SB
Bore Size	4.1275
Crankshaft Stroke	4.100
Rod Length	6.125
Piston Type	Flat Top
Compression Height	1.065
Piston Material	2618 Forged
Piston Ring Size	1.2mm 1.5mm 3.0mm
Wrist Pin Size	0.927
Custom Notices	⚠ PROP 65 WARNING

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