Home / Shop / Speed-Pro Hypereutectic Pistons H345DCP30 Pistons, Hypereutectic, Flat, 4.030 in. Bore, Chevy, Set of 8

Speed-Pro Hypereutectic Pistons H345DCP30 Pistons, Hypereutectic, Flat, 4.030 in. Bore, Chevy, Set of 8

SKU: SLPH345DCP30

Pistons

Sealed Power

Speed-Pro Hypereutectic Pistons H345DCP30 Pistons, Hypereutectic, Flat, 4.030 in. Bore, Chevy, Set of 8

SKU: SLPH345DCP30

Pistons

LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.

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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: 2026-10-11 02:19:06

Specifications

Product Attributes - Brand: Sealed Power
Product Attributes - Manufacturer's Part Number: H345DCP30
Product Attributes - Part Type: Pistons
Product Attributes - Product Line: Speed-Pro Hypereutectic Pistons
Product Attributes - UPC: 019826500724
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 as a set of 8.
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	slpH345DCP30
SFX Item ID	5028144
Supplier Item Code	5028144
Manufacturer SKU	H345DCP30
Manufacturer UPC	19826500724
Alternative References	SEAH345DCP30

Compatibility

Application Data

Make CADILLAC
Model BROUGHAM
Submodel BASE
Beginning Year 1990
Ending Year 1990
Engine Type V8
Liter 5.7
CID 350
Engine Family Chevy small block Gen I
Engine Size 5.7L/350
Engine VIN Code 7

Make	CADILLAC
Model	BROUGHAM
Submodel	BASE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Hypereutectic; w/machined valve reliefs and circlip grooves; Use w/LR-63 lock ring for floated applications Perf. or reg. duty operation Use w/E-251K ring set .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.548 CD Flat, 4 reliefs Use w/Lock
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	BASE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. 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 Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	BASE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-251K ring set .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.548 CD Flat, 4 reliefs Use w/Lock Ring LR-63
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	BASE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-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
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	BASE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-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; 1.548 CD; Flat, 4 reliefs; Use w/Lock
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	BASE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-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 w/Lock Ring LR-63; DUROSHIELD ski
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	BASE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-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 w/Lock Ring LR-63; DUROSHIELD® sk
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	BASE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-251K ring set w/machined valve reliefs and circlip grooves Hypereutectic Use w/LR-63 lock ring for floated applications .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove; 1.548 CD; Flat, 4 reliefs; Use w/Lock
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	BASE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Ring Groove Widths: 5/64in , 5/64in , 3/16in Sold as Set Priced Individually
Engine VIN Code	7

Make CADILLAC
Model BROUGHAM
Submodel BASE
Beginning Year 1990
Ending Year 1990
Engine Type V8
Liter 5.7
CID 350
Engine Family Chevy small block Gen I
Engine Size 5.7L/350
Application Notes Sold as Set
Engine VIN Code 7

Make	CADILLAC
Model	BROUGHAM
Submodel	BASE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Sold as Set Priced Individually
Engine VIN Code	7

Make CADILLAC
Model BROUGHAM
Submodel D'ELEGANCE
Beginning Year 1990
Ending Year 1990
Engine Type V8
Liter 5.7
CID 350
Engine Family Chevy small block Gen I
Engine Size 5.7L/350
Engine VIN Code 7

Make	CADILLAC
Model	BROUGHAM
Submodel	D'ELEGANCE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Hypereutectic; w/machined valve reliefs and circlip grooves; Use w/LR-63 lock ring for floated applications Perf. or reg. duty operation Use w/E-251K ring set .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.548 CD Flat, 4 reliefs Use w/Lock
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	D'ELEGANCE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. 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 Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	D'ELEGANCE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-251K ring set .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.548 CD Flat, 4 reliefs Use w/Lock Ring LR-63
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	D'ELEGANCE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-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
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	D'ELEGANCE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-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; 1.548 CD; Flat, 4 reliefs; Use w/Lock
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	D'ELEGANCE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-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 w/Lock Ring LR-63; DUROSHIELD ski
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	D'ELEGANCE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-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 w/Lock Ring LR-63; DUROSHIELD® sk
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	D'ELEGANCE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Perf. or reg. duty operation Use w/E-251K ring set w/machined valve reliefs and circlip grooves Hypereutectic Use w/LR-63 lock ring for floated applications .9275" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove; 1.548 CD; Flat, 4 reliefs; Use w/Lock
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	D'ELEGANCE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Ring Groove Widths: 5/64in , 5/64in , 3/16in Sold as Set Priced Individually
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	D'ELEGANCE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Sold as Set
Engine VIN Code	7

Make	CADILLAC
Model	BROUGHAM
Submodel	D'ELEGANCE
Beginning Year	1990
Ending Year	1990
Engine Type	V8
Liter	5.7
CID	350
Engine Family	Chevy small block Gen I
Engine Size	5.7L/350
Application Notes	Sold as Set Priced Individually
Engine VIN Code	7

Make CHEVROLET
Beginning Year 1967
Ending Year 1990
Engine Type V8
Engine Family Chevy small block Gen I
Engine Size 5.7L/350

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Speed-Pro Hypereutectic Pistons H345DCP30 Pistons, Hypereutectic, Flat, 4.030 in. Bore, Chevy, Set of 8

Speed-Pro Hypereutectic Pistons H345DCP30 Pistons, Hypereutectic, Flat, 4.030 in. Bore, Chevy, Set of 8

Description

Part Type

Specifications

Reference Information

Compatibility

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