Australia-wide shipping on performance, 4x4 and vehicle-specific upgrades.
Searching parts and components for all vehicles All vehicles
Set Vehicle

Search by SKU, brand, keyword, or set a vehicle to keep fitment-aware browsing active.

Sealed Power

Speed-Pro Hypereutectic Pistons WH345DCP30 Piston, Hypereutectic, Flat, 4.030 in. Bore, Chevy, Each

SKU: SLPWH345DCP30

Pistons
Speed-Pro Hypereutectic Pistons WH345DCP30 Piston, Hypereutectic, Flat, 4.030 in. Bore, Chevy, Each

Sealed Power

Speed-Pro Hypereutectic Pistons WH345DCP30 Piston, Hypereutectic, Flat, 4.030 in. Bore, Chevy, Each

SKU: SLPWH345DCP30

Pistons
A$105.87
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
View cart
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

If you're looking for pistons with an unbeatable combination of performance and value, then Speed-Pro hypereutectic pistons are for you. These pistons are manufactured from aluminum alloy that contains 16 percent silicon for greater strength and wear resistance. They're also molded in the latest permanent-mold technology to ensure the precise fit and tight bore clearances that today's top engine builders demand. Hypereutectic pistons are ideal for use in high performance street, bracket, and oval track racing—and will work perfectly with normal ring end gaps. Choose the model designed for your vehicle and engine application.

Part Type

Cast Piston

Data: v4.2 - Upd: 2026-09-30 14:11:34

Specifications

Product Attributes - Brand
Sealed Power
Product Attributes - Manufacturer's Part Number
WH345DCP30
Product Attributes - Part Type
Pistons
Product Attributes - Product Line
Speed-Pro Hypereutectic Pistons
Product Attributes - UPC
019826510211
Product Attributes - Piston Rings Included
No
Product Attributes - Bore (in.)
4.030 in.
Product Attributes - Bore (mm)
102.362mm
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
Hypereutectic aluminum
Product Attributes - Compression Height (in.)
1.548 in.
Product Attributes - Piston Head Volume (cc)
+6.90cc
Product Attributes - Wrist Pin Style
Press-fit or floating
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 individually.
Product Attributes - Notes
DurOshield® coated piston skirt. These pistons can be free floated but locks must be purchased separately.

Reference Information

Brand Name/s Sealed Power
StreetFX SKU slpWH345DCP30
SFX Item ID 5030198
Supplier Item Code 5030198
Manufacturer SKU WH345DCP30
Manufacturer UPC 19826510211
Alternative References SEAWH345DCP30

Compatibility

Application Data
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelBASE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelBASE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesHypereutectic; w/machined valve reliefs and circlip grooves; Use w/LR-63 lock ring for floated applications Type: Cast Piston - Individual Perf. or reg. duty operation Use w/WE-251K ring set .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.54
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelBASE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesPerf. or reg. duty operation Hypereutectic Use w/LR-63 lock ring for floated applications 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.548 CD Flat, 4 reliefs DUROSHIELD skirt coated piston w/machined valve reliefs and circlip grooves
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelBASE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesSold Individually
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelBASE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesType: Cast Piston - Individual Perf. or reg. duty operation Hypereutectic Use w/WE-251K ring set w/machined valve reliefs and circlip grooves Use w/LR-63 lock ring for floated applications .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s); 3/16 Groove; 1.54
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelBASE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesType: Cast Piston - Individual Perf. or reg. duty operation Use w/WE-251K ring set .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.548 CD Flat, 4 reliefs
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelBASE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesType: Cast Piston - Individual Perf. or reg. duty operation Use w/WE-251K ring set Hypereutectic w/machined valve reliefs and circlip grooves Use w/LR-63 lock ring for floated applications .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s)
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelBASE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesType: Cast Piston - Individual Perf. or reg. duty operation Use w/WE-251K ring set Hypereutectic w/machined valve reliefs and circlip grooves Use w/LR-63 lock ring for floated applications .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s); 3/16 Groove; 1.54
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelBASE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesType: Cast Piston - Individual Perf. or reg. duty operation Use w/WE-251K ring set Hypereutectic w/machined valve reliefs and circlip grooves Use w/LR-63 lock ring for floated applications 2 Groove(s) 5/64 1 Groove(s) 3/16; 1.548 CD; Flat, 4 reliefs; Use
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelD'ELEGANCE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelD'ELEGANCE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesHypereutectic; w/machined valve reliefs and circlip grooves; Use w/LR-63 lock ring for floated applications Type: Cast Piston - Individual Perf. or reg. duty operation Use w/WE-251K ring set .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.54
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelD'ELEGANCE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesPerf. or reg. duty operation Hypereutectic Use w/LR-63 lock ring for floated applications 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.548 CD Flat, 4 reliefs DUROSHIELD skirt coated piston w/machined valve reliefs and circlip grooves
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelD'ELEGANCE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesSold Individually
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelD'ELEGANCE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesType: Cast Piston - Individual Perf. or reg. duty operation Hypereutectic Use w/WE-251K ring set w/machined valve reliefs and circlip grooves Use w/LR-63 lock ring for floated applications .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s); 3/16 Groove; 1.54
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelD'ELEGANCE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesType: Cast Piston - Individual Perf. or reg. duty operation Use w/WE-251K ring set .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.548 CD Flat, 4 reliefs
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelD'ELEGANCE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesType: Cast Piston - Individual Perf. or reg. duty operation Use w/WE-251K ring set Hypereutectic w/machined valve reliefs and circlip grooves Use w/LR-63 lock ring for floated applications .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s)
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelD'ELEGANCE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesType: Cast Piston - Individual Perf. or reg. duty operation Use w/WE-251K ring set Hypereutectic w/machined valve reliefs and circlip grooves Use w/LR-63 lock ring for floated applications .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s); 3/16 Groove; 1.54
    Engine VIN Code7
  • MakeCADILLAC
    ModelBROUGHAM
    SubmodelD'ELEGANCE
    Beginning Year1990
    Ending Year1990
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesType: Cast Piston - Individual Perf. or reg. duty operation Use w/WE-251K ring set Hypereutectic w/machined valve reliefs and circlip grooves Use w/LR-63 lock ring for floated applications 2 Groove(s) 5/64 1 Groove(s) 3/16; 1.548 CD; Flat, 4 reliefs; Use
    Engine VIN Code7
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
  • MakeCHEVROLET
    ModelBEL AIR
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesHypereutectic Perf. or reg. duty operation Use w/LR-63 lock ring for floated applications 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.548 CD Flat, 4 reliefs DUROSHIELD skirt coated piston w/machined valve reliefs and circlip grooves
  • 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 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 NotesType: Cast Piston - Individual Perf. or reg. duty operation Use w/WE-251K ring set Hypereutectic w/machined valve reliefs and circlip grooves Use w/LR-63 lock ring for floated applications 2 Groove(s) 5/64 1 Groove(s) 3/16; 1.548 CD; Flat, 4 reliefs; Use
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
  • MakeCHEVROLET
    ModelBISCAYNE
    SubmodelBASE
    Beginning Year1969
    Ending Year1970
    Engine TypeV8
    Liter5.7
    CID350
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Application NotesHypereutectic Perf. or reg. duty operation Use w/LR-63 lock ring for floated applications 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.548 CD Flat, 4 reliefs DUROSHIELD skirt coated piston w/machined valve reliefs and circlip grooves

Loading compatibility information...

Keep shopping

More from Sealed Power