SRP Forged 4.080" Dish Top Piston Set, -26cc, 4.250" Stroke, 6.700" Rod (SRP271155)

SRP271155 - FORD FE 390 4.080" DISH -26cc

1.325" Comp Height. Suit Ford FE 391

Part Number: SRP271155

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