JE Pistons Bbc 4.500" Pistons -20Cc Dish 4.250" St 6.385" Rod 1.270" C 257942
(Prior to Dispatch)
These big block pistonsare compatible with forcedinduction, nitrous and anglemilled heads. The inverteddome shape has been designedfor maximum efficiency andhorsepower. Valve reliefswill accommodate oversizedvalves and long duration,tight lobe separation cams.Precision CNC machined ringgrooves accept 1/16, 1/16,3/16 rings. Will fit bothopen and closed chambercylinder heads.
Includes:
- Pin#990-2930-18-51S(174g)
- Double spiro locks#990-042-CS
Specifications:
- Part #: J257942
- CID:540
- Bore: 4.500
- Stroke: 4.250
- Rod Length: 6.385
- Block Height: 9.780
- Compression Height: 1.270
- Compression Ratio with110cc chamber volume: 8.8
- Compression Ratio with118cc chamber volume: 8.4
- Compression Ratio with124cc chamber volume: 8.1
- Dome Volume: -20.0cc
- Gram Weight: 569
- Footnote: Oil Rail Support isIncluded
- Oversize:.034
- Recommended RingSet (Check Proseal listing todetermine oil ring tension):J100F8-4500-5
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 ofunique 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.