Home / Shop / Speed-Pro Hypereutectic Pistons H661CP60 Pistons, Hypereutectic, Flat, 4.310 in. Bore, Chevy, GMC, Set of 8

Speed-Pro Hypereutectic Pistons H661CP60 Pistons, Hypereutectic, Flat, 4.310 in. Bore, Chevy, GMC, Set of 8

SKU: SLPH661CP60

Pistons

Sealed Power

Speed-Pro Hypereutectic Pistons H661CP60 Pistons, Hypereutectic, Flat, 4.310 in. Bore, Chevy, GMC, Set of 8

SKU: SLPH661CP60

Pistons

Sale ends in Calculating... Tue 13 Oct, 7:01 am AEST

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

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: 2026-10-02 21:24:42

Specifications

Product Attributes - Brand: Sealed Power
Product Attributes - Manufacturer's Part Number: H661CP60
Product Attributes - Part Type: Pistons
Product Attributes - Product Line: Speed-Pro Hypereutectic Pistons
Product Attributes - UPC: 087674961684
Product Attributes - Piston Rings Included: No
Product Attributes - Bore (in.): 4.310 in.
Product Attributes - Bore (mm): 109.474mm
Product Attributes - Stroke: 4.000 in.
Product Attributes - Engine Stroke Type: Stock
Product Attributes - Rod Length: 6.135 in.
Product Attributes - Piston Style: Flat top, with two valve reliefs
Product Attributes - Piston Material: Hypereutectic aluminum
Product Attributes - Compression Height (in.): 1.625 in.
Product Attributes - Piston Head Volume (cc): +2.00cc
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.): 0.989 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	slpH661CP60
SFX Item ID	5029990
Supplier Item Code	5029990
Manufacturer SKU	H661CP60
Manufacturer UPC	87674961684
Alternative References	SEAH661CP60

Compatibility

Application Data

Make CHEVROLET
Beginning Year 1970
Ending Year 1976
Engine Type V8
Engine Family Chevy big block Mark IV
Engine Size 7.4L/454
Application Notes Passenger car engines.
Make CHEVROLET
Beginning Year 1973
Ending Year 1983
Engine Type V8
Engine Family Chevy big block Mark IV
Engine Size 7.4L/454
Application Notes Light duty truck engines.

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Hypereutectic Use in sets only .9893" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.625 CD; Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD« skirt coated piston; .060" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only .9893" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.625 CD Flat Head w/2 valve reliefs

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only Hypereutectic .9893" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.625 CD; Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD« skirt coated piston; .060" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only Hypereutectic .9893" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.625 CD; Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD® skirt coated piston; .060" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only Hypereutectic .9893" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.625 CD

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only Hypereutectic 2 Groove(s) 5/64 1 Groove(s) 3/16 1.625 CD Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD skirt coated piston; .060" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only Hypereutectic 2 Groove(s) 5/64 1 Groove(s) 3/16 1.625 CD Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD® skirt coated piston; .060" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Spec. Hi-Perf. Hypereutectic 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.625 CD Flat Head w/2 valve reliefs DUROSHIELD skirt coated piston Use in sets only

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Except Special High Performance

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Hypereutectic; Use w/E-424K 30 ring set Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only .9893" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.625 CD Flat Head w/2 valve reliefs

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Ring Groove Widths: 5/64in , 5/64in , 3/16in Sold as Set Priced Individually Except Special High Performance

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Sold as Set Except Special High Performance

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Sold as Set Priced Individually Except Special High Performance

Make CHEVROLET
Model BEL AIR
Submodel BASE
Beginning Year 1970
Ending Year 1971
Engine Type V8
Liter 7.4
CID 454
CC 7439
Engine Family Chevy big block Mark IV
Engine Size 7.4L/454

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only .9893" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.625 CD Flat Head w/2 valve reliefs

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only Hypereutectic .9893" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.625 CD; Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD« skirt coated piston; .060" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only Hypereutectic .9893" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.625 CD; Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD® skirt coated piston; .060" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only Hypereutectic .9893" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.625 CD

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only Hypereutectic 2 Groove(s) 5/64 1 Groove(s) 3/16 1.625 CD Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD skirt coated piston; .060" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only Hypereutectic 2 Groove(s) 5/64 1 Groove(s) 3/16 1.625 CD Flat Head w/2 valve reliefs; Use E424K30 ring set for H661CP100; DUROSHIELD® skirt coated piston; .060" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Exc. Spec. Hi-Perf. Hypereutectic 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.625 CD Flat Head w/2 valve reliefs DUROSHIELD skirt coated piston Use in sets only

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Except Special High Performance

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1971
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Hypereutectic; Use w/E-424K 30 ring set Exc. Hi-Perf. Exc. Spec. Hi-Perf. Use in sets only .9893" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.625 CD Flat Head w/2 valve reliefs

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Speed-Pro Hypereutectic Pistons H661CP60 Pistons, Hypereutectic, Flat, 4.310 in. Bore, Chevy, GMC, Set of 8

Speed-Pro Hypereutectic Pistons H661CP60 Pistons, Hypereutectic, Flat, 4.310 in. Bore, Chevy, GMC, Set of 8

Description

Part Type

Specifications

Reference Information

Compatibility

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