JE Ford 351W Big Bore Inverted Dome Forged Piston (J207417)

J207417 - SBF 4.125" PISTONS -30cc DISH

Ford SVO/Dart 9.500" block, 438 c.i., 4.125" bore, 4.100" stroke, -30cc

Part Number: J207417

The industry standard for rock solid durability in blower/turbo/nitrous 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 set contains low tension oil ring, for standard tension change ring ring prefix to J100F8. Hardened Nitrous Series (NHS) rings also available, change ring prefix to J820F8.

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

Double Spiro locks #927-042-CS
Double pin oilers

Specifications
:
Part #: J207417
CID: 438

Bore: 4.125
Stroke: 4.100
Rod Length: 6.200
Block Height: 9.480
Compression Height: 1.230
Compression Ratio with 56cc chamber volume: 4
Compression Ratio with 60cc chamber volume: 10.0
Compression Ratio with 64cc chamber volume: 9.7
Dome Volume: -30cc
Gram Weight: 464
Footnote: Oil Rail Support is Included, .927 Pin Diameter
Oversize: std

Recommended Ring Set (Check Proseal listing to determine oil ring tension): J100F8-4125-5
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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. tilising 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.