LS1 Extreme Duty FSR Flat Top Forged Piston3.898" bore, 3.622" stroke, 6.098" rod length, .945" Pin, -2.0cc dome volumeBrand: JEPart Number: J321239Description: we have redesigned and expanded our GM LS1 series product lines! These new pistons utilized our dedicatedForged Side Relief (FSR) forging that was specifically designed for high output GM LS1 series engines. In addition we have found ways toreduce weight and maintain thedurability needed for both street and racing use. Lightweight and extremely durable, these pistons are machined for 1.5mm, 1.5mm, 3.0mm rings. wrist pin upgraderecommended above 800hp.
Includes:
- .945 x 2.250 straight wall carbon steel wrist pin
- Wire locks
Specifications :
- Part #: J321239
- Bore: 3.898"
- Oversize: STD
- Stroke: 3.622
- Rod Length: 6.098"
- Compression Height: 1.340"
- Compression Ratio with 64cc chamber volume: 10.4
- Compression Ratiowith 66cc chamber volume: 10.2
- Compression Ratiowith 72cc chamber volume: 9.6
- Dome Volume: -2.0cc
- Gram Weight: 437
- Footnote: Forged Side Relief / Forced Induction
- Reconmended Ring Set: J68008-3900-3
