SRP Forged 4.080" Flat Top Piston Set, 3.980" Stroke, 6.490" Rod (SRP261496)
1.670" Comp Height. Suit Ford FE 390SRP261496 - FORD FE 390 4.080" FLAT TOP
1.670" Comp Height. Suit Ford FE 390
Part Number: SRP261496
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
Includes:
Pin#: 975-2750-16-51S
Double Spiro Locks (#990-042-CS)
Specifications:
Engine: BIG BLOCK FORD FE
Bore Diameter: 4.080
Compression Height: 1.670
Compression Ratio with 68cc chamber volume: 11.4
Compression Ratio with 72cc chamber volume: 10.9
Compression Ratio with 76cc chamber volume: 10.5
Piston Volume: -5.0
CylinderHead: EDELBROCK 6005/06
Piston Pin Outside Diameter: 0.975
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: 534
Pin Wall Thickness: 0.160
Piston Type: Flat
Ring Set: J100F8-4080-5