1.325" Comp Height. Suit Ford FE 391

SRP271155

P271155

Our race-proven SRP design is now available for the Big Block "FE" series. Available for both stock stroke and stroker applications. Bore sizes for the 428 block are set at .025" over to allow the use of popular file-fit rings. These pistons offer thick .250" top ring lands for use with limited nitrous or boost while still offering substantial weight savings. Wrist pin diameter is .975" for part numbers designed for 6.490" OEM rods and .990" for part numbers designed for aftermarket 6.700" rods Features: Pin#: 975-2750-16-51S (Footnote P) or 990-2750-15-51S (Footnote E) Double Spiro Locks (#990-042-CS) Specifications: Engine: BIG BLOCK FORD FE Bore Diameter: 4.080 Compression Height: 1.325 Compression Ratio with 68cc chamber volume: 9.8 Compression Ratio with 72cc chamber volume: 9.5 Compression Ratio with 76cc chamber volume: 9.2 Piston Volume: -26 Cylinder Head: EDELBROCK 6007/08 Piston Pin Outside Diameter: 0.990 Piston Pin Length: 2.750 Piston Pin Material: 5115 Ringset Included: No Top Compression Ring Thickness: 1/16" Second Compression Ring Thickness: 1/16" Oil Ring Thickness: 3/16" Piston Material: 4032 Forging Type: FSR Piston Avg Weight: 463 Pin Wall Thickness: 0.150 Piston Type: Dish Ring Set: J100F8-4080-5