LS1/LS2/LS3/LS6/LS9 - FSR Inverted Dome Forged Piston J221180

SKU: 7996305768769

Name: LS1/LS2/LS3/LS6/LS9 - FSR Inverted Dome Forged Piston J221180

LS1/LS2/LS3/LS6/LS9 - FSR Inverted Dome Forged Piston427 c.i., 4.125" bore, 4.000" stroke, 6.125" rod length, -29.0cc dome volume J221180 21180 These heavy duty FSR pistons are specifically designed for high horsepower forced induction applications! JE's FSR forging design allows for use of the most popular stroke and rod combinations while eliminating reluctor wheel clearance problems. Lightweight and extremely durable, these pistons are machined for either 1.2, 1.5, 3.0mm rings (Ring set prefix JG3108) or 1.5, 1.5, 3.0mm rings (Ring set prefix J60008) and have an inverted dome designed for optimum flame propagation with forced induction applications. Compression ratio calculated with .042 gasket thickness and 0.00" deck clearance.

Includes :

Pin #927-2250-15-51C (111g)

Wire locks #927-073-MW

Smooth Finished Crown

Accumulator Grooves

Contact Reduction Grooves

Specifications :

Part #: J221180

CID: 427

Bore: 4.125

Stroke: 4.000

Rod Length: 6.125

Block Height: 9.240

Compression Height: 1.115

Compression Ratio with 64cc chamber volume: 9.5

Compression Ratio with 66cc chamber volume: 9.3

Compression Ratio with 72cc chamber volume: 8.9

Dome Volume: -29.0cc

Gram Weight: 425

Footnote: Oil Rail Support is Included, .927 Pin Diameter

Oversize: .125

Recommended Ring Set (Check Proseal listing to determine oil ring tension): J60008-4125-5

With over 60 years of experience, JE Pistons is the leader in high performance forged pistons. We've built a reputation that the competition can only follow. JE has a history of manufacturing the highest quality pistons and components that professional engine builders, race teams, and high performance enthusiasts trust and rely on.

The top engine builders in NASCAR, ALMS, NHRA, AMA Supercross and others choose JE Pistons over any other brand. Fo...