JE Pistons Ls7 4.125" Pistons -5Cc Flat 4.000" St 6.125" Rod 1.115" Ch 243018

JE Pistons Ls7 4.125" Pistons -5Cc Flat 4.000" St 6.125" Rod 1.115" Ch

This piston set's FSR(Forged Side Relief) slipperforging design allows the useof the most popular strokeand rod combinations whileeliminating reluctor wheelclearance problems.Lightweight and extremelydurable, these pistons aremachined for 1.5, 1.5, 3mmrings and have an inverteddome designed to achieveoptimum compression ratiowith forced inductionapplications. CR calculatedwith .042 gasket thicknessand 0.00" deck clearance

Includes:

• Pin#927-2250-15-51C (111g)
• Wire locks #927-073-MW
• Accumulator Grooves
• Double Forced PinOilers
• ContactReduction Grooves

Specifications:

• Part #:J243018
• CID: 427
• Bore: 4.125
• Stroke: 4.000
• RodLength: 6.125
• BlockHeight: 9.240
• Compression Height: 1.115
• Compression Ratio with64cc chamber volume: 12.1
• Compression Ratiowith 66cc chamber volume:11.9
• CompressionRatio with 72cc chambervolume: 11.1
• DomeVolume: -5.0cc
• GramWeight: 440
• Footnote: Oil Rail Support isIncluded, .927 Pin Diameter
• Oversize: .125
• Recommended Ring Set(Check Proseal listing todetermine oil ring tension):J60008-4125-5

With over 60 years ofexperience, JE Pistons is theleader in high performanceforged pistons. We've built areputation that thecompetition can only follow.JE has a history ofmanufacturing the highestquality pistons andcomponents that professionalengine builders, race teams,and high performanceenthusiasts trust and relyon.

The top enginebuilders in NASCAR, ALMS,NHRA, AMA Supercross andothers choose JE Pistons overany other brand. For over 60years, JE's position at theforefront of performancepiston manufacturing has beena result of continuousresearch and development ofnique materials, pistondesigns and technologies.Utilising State-Of-The-ArtCNC machines formanufacturing along withpurpose-designed forgings, JEis able to maintain exactingspecifications on each andevery piston and holdtolerances to millionths ofan inch. Also available fromJE is industry-leadingprocesses like Ultra Crown, aDigital Three Dimensionalpiston crown machiningprocess and Finite ElementAnalysis (FEA). FEA is acomputer process wherebystress and fatigue are testedon a computer model before itgoes into production. JE isthe only performance pistonmanufacturer to earn theQS-9000 quality standardwhich confirms that JEprovides customers thehighest standards in qualitycontrol. In addition, we alsohave State-Of-The-Artinspection equipment andtesting equipment whichenables us to constantlybring you, the customer, thevery latest in piston designconfigurations.