SBF 4.030″ PISTONS -5cc FLAT 3.400″ ST 5.400″ ROD 1.100″ CH

Description

This piston set is an excellent choice for pump gas, nitrous, or race fuel/E85 forced induction combinations. Will accommodate oversized valves and long-duration, tight lobe separation cams. Precision CNC machined ring grooves accept 1/16″, 1/16″, 3/16″ rings. Pin upgrade recommended above 700hp. Recommended ring sets contains low tension oil ring; for standard tension, change ring prefix to J100F8. Hardened Nitrous Series (HNS) rings also available, change ring prefix to J820F8.

Includes
:
Pin #927-2750-15-51S (130g)

Contact reduction grooves
Double spiro locks #927-042-CS

Specifications
:
Part #: J188703
CID: 347
Bore: 4.030

Stroke: 3.400
Rod Length: 5.400
Block Height: 8.200
Compression Height: 1.100
Compression Ratio with 56cc chamber volume: 11.2
Compression Ratio with 60cc chamber volume: 10.6
Compression Ratio with 64cc chamber volume: 10.1
Dome Volume: -5.0cc

Gram Weight: 411
Footnote: Oil Rail Support is Included, .927 Pin Diameter
Oversize: 0.030

Recommended Ring Set (Check Proseal listing to determine oil ring tension): J10008-4030-5
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. For over 60 years, JE’s position at the forefront of performance piston manufacturing has been a result of continuous research and development of unique materials, piston designs and technologies. Utilising State-Of-The-Art CNC machines for manufacturing along with purpose-designed forgings, JE is able to maintain exacting specifications on each and every piston and hold tolerances to millionths of an inch. Also available from JE is industry-leading processes like Ultra Crown, a Digital Three Dimensional piston crown machining process and Finite Element Analysis (FEA). FEA is a computer process whereby stress and fatigue are tested on a computer model before it goes into production. JE is the only performance piston manufacturer to earn the QS-9000 quality standard which confirms that JE provides customers the highest standards in quality control. In addition, we also have State-Of-The-Art inspection equipment and testing equipment which enables us to constantly bring you, the customer, the very latest in piston design configurations.