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Sealed Power

Speed-Pro Forged Pistons L2256F Pistons, Forged, Flat, 4.000 in. Bore, Chevy, GMC, Set of 8

SKU: SLPL2256F

Pistons
Speed-Pro Forged Pistons L2256F Pistons, Forged, Flat, 4.000 in. Bore, Chevy, GMC, Set of 8

Sealed Power

Speed-Pro Forged Pistons L2256F Pistons, Forged, Flat, 4.000 in. Bore, Chevy, GMC, Set of 8

SKU: SLPL2256F

Pistons
A$1,187.52
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Speed-Pro forged pistons are made from extruded VMS-75 aluminum alloy that's forged under 3,000 tons of pressure to "near-net" shape. After that, they're machined to their final configuration. These pistons offer excellent strength and durability—and are capable of taking the punishment that's dished out on the street and in competition. They're available for a wide variety of applications, including OE replacements and all-out racing engines.

Part Type

Forged Piston

Data: v4.2 - Upd: 2026-09-30 14:11:32

Specifications

Product Attributes - Brand
Sealed Power
Product Attributes - Manufacturer's Part Number
L2256F
Product Attributes - Part Type
Pistons
Product Attributes - Product Line
Speed-Pro Forged Pistons
Product Attributes - UPC
087674708821
Product Attributes - Piston Rings Included
No
Product Attributes - Bore (in.)
4.000 in.
Product Attributes - Bore (mm)
101.600mm
Product Attributes - Stroke
3.480 in.
Product Attributes - Engine Stroke Type
Stock
Product Attributes - Rod Length
5.700 in.
Product Attributes - Piston Style
Flat top, with four valve reliefs
Product Attributes - Piston Material
Forged aluminum
Product Attributes - Compression Height (in.)
1.563 in.
Product Attributes - Piston Head Volume (cc)
+6.10cc
Product Attributes - Wrist Pin Style
Press-fit
Product Attributes - Wrist Pin Retainers Included
No
Product Attributes - Wrist Pin Included
Yes
Product Attributes - Pin Diameter (in.)
0.927 in.
Product Attributes - Piston Ring Thickness
5/64 in. x 5/64 in. x 3/16 in.
Product Attributes - File Fit
No
Product Attributes - Gapless
No
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold as a set of 8.
Product Attributes - Notes
DurOshield® coated piston skirt.

Reference Information

Brand Name/s Sealed Power
StreetFX SKU slpL2256F
SFX Item ID 5029835
Supplier Item Code 5029835
Manufacturer SKU L2256F
Manufacturer UPC N/A
Alternative References SEAL2256F

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year1968
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesOriginal equipment replacement for Passenger car engines.
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year2002
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesDeck clearance 0.022 inch. Skirt clearance 0.0015 inch.
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year2002
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesMercury Marine models 255 255HP, 260, 260/5.7L 260HP, 270 270HP, 280 280HP, 300, 300 MR/TR 300HP.
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year2002
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesMercury Marine models 350 Magnum, 350 Magnum Tournament Ski 240HP, 260 HP, 265HP and 270HP
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year2002
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesMercury Marine models 5.7L Blue Water Inboard 250HP and 260HP.
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year2002
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesMercury Marine models 5.7L Bravo 240HP, 250HP and 270HP.
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year2002
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesMercury Marine models 5.7L Comp Ski 250HP and 260HP.
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year2002
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesMercury Marine models Black Scorpion 315HP, 5.7L 230HP, 235HP and 5.7L 260HP.
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year2002
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesVolvo Marine models AQ260A, BB260A and BB260AV.
  • MakeCHEVROLET
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesOriginal equipment replacement for Passenger car engines except Corvette.
  • MakeCHEVROLET
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesOriginal equipment replacement for light duty truck engines.
  • MakeCHEVROLET
    Beginning Year1980
    Ending Year1985
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesOriginal equipment replacement for RV performance engines.
  • MakeCHEVROLET
    Beginning Year1981
    Ending Year1981
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesOriginal equipment replacement for Passenger car performance engines with VIN code 6.
  • MakeCHEVROLET
    Beginning Year1981
    Ending Year1982
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesOriginal equipment replacement for Passenger car performance engines with VIN code L.
  • MakeCHEVROLET
    Beginning Year1982
    Ending Year1982
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesOriginal equipment replacement for Passenger car performance engines with VIN code 8.
  • MakeCHEVROLET
    Beginning Year1983
    Ending Year1985
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesOriginal equipment replacement for Passenger car performance engines with VIN code 6.
  • MakeCHEVROLET
    Beginning Year1984
    Ending Year1985
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesOriginal equipment replacement for Passenger car performance engines with VIN code 8.
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesPowerforged 2 Groove(s) 5/64 1 Groove(s) 3/16 1.563 CD Flat, 4 reliefs DUROSHIELD skirt coated piston Standard Size
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesPowerforged piston 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.563in Compression Distance Flat Head Piston with 4 Valve Reliefs DUROSHIELD Skirt Coated Piston Sold as Set Priced Individually Standard
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesPowerforged piston 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.563in Compression Distance Flat Head Piston with 4 Valve Reliefs DUROSHIELD Skirt Coated Piston Standard
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesPowerforged piston Sold as Set
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesSold as Set Priced Individually
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesStandard Powerforged piston 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.563in Compression Distance Flat Head Piston with 4 Valve Reliefs DUROSHIELD Skirt Coated Piston
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesStandard Size Powerforged 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.563 CD Flat, 4 reliefs DUROSHIELD skirt coated piston
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350

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