Speed-Pro Forged Pistons L2349F30 Pistons, Forged, Dome, 4.280 in. Bore, Chevy, Set of 8

SKU: SLPL2349F30

Pistons

Speed-Pro Forged Pistons L2349F30 Pistons, Forged, Dome, 4.280 in. Bore, Chevy, Set of 8

SKU: SLPL2349F30

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

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: L2349F30
Product Attributes - Part Type: Pistons
Product Attributes - Product Line: Speed-Pro Forged Pistons
Product Attributes - UPC: 087674134910
Product Attributes - Piston Rings Included: No
Product Attributes - Bore (in.): 4.280 in.
Product Attributes - Bore (mm): 108.712mm
Product Attributes - Stroke: 4.000 in.
Product Attributes - Engine Stroke Type: Stock
Product Attributes - Rod Length: 6.135 in.
Product Attributes - Piston Style: Dome, with single valve relief
Product Attributes - Piston Material: Forged aluminum
Product Attributes - Compression Height (in.): 1.645 in.
Product Attributes - Dome Height (in.): 0.265 in.
Product Attributes - Piston Head Volume (cc): -30.60cc
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	slpL2349F30
SFX Item ID	5030348
Supplier Item Code	5030348
Manufacturer SKU	L2349F30
Manufacturer UPC	N/A
Alternative References	SEAL2349F30

Compatibility

Application Data

Make	CHEVROLET
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Original equipment style replacement for special high performance, 4 barrel carburetor and closed chamber cylinder heads.

Make	CHEVROLET
Beginning Year	1970
Ending Year	1990
Engine Type	V8
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Closed chamber heads. Deck clearance 0.020 inch. Skirt clearance 0.0040 inch.

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Powerforged; w/Closed chamber cyl. head Spec. Hi-Perf. 0.9897" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.645 CD .265 dome DUROSHIELD® skirt coated piston 30 O/S has .221 dome

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Powerforged piston Closed Chamber Head 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.645in Compression Distance DUROSHIELD Skirt Coated Piston Sold as Set Priced Individually with Special High Performance Engine Dome Head; with 0.221in Dome

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Powerforged piston Closed Chamber Head 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.645in Compression Distance DUROSHIELD Skirt Coated Piston with Special High Performance Engine Dome Head; with 0.221in Dome Height 0.030in Oversize

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

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
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 Dome Head; with 0.221in Dome Height

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
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

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Spec. Hi-Perf. .221 dome .030" Oversize Powerforged w/Closed chamber cyl. Head 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.645 CD DUROSHIELD skirt coated piston

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Spec. Hi-Perf. Powerforged 0.9897" Pin Dia. w/Closed chamber cyl. head 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.645 CD .265 dome; DUROSHIELD« skirt coated piston; 30 O/S has .221 dome; 60 O/S has .210 dome; .030" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Spec. Hi-Perf. Powerforged w/Closed chamber cyl. head 0.9897" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.645 CD .265 dome; DUROSHIELD« skirt coated piston; 30 O/S has .221 dome; 60 O/S has .210 dome; .030" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Spec. Hi-Perf. Powerforged w/Closed chamber cyl. head 0.9897" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.645 CD .265 dome; DUROSHIELD® skirt coated piston; 30 O/S has .221 dome; 60 O/S has .210 dome; .030" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Spec. Hi-Perf. Powerforged w/Closed chamber cyl. head 0.9897" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.645 CD .265 dome

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Spec. Hi-Perf. Powerforged w/Closed chamber cyl. head 2 Groove(s) 5/64 1 Groove(s) 3/16 1.645 CD .265 dome DUROSHIELD skirt coated piston; 30 O/S has .221 dome; 60 O/S has .210 dome; .030" Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Spec. Hi-Perf. Powerforged w/Closed chamber cyl. head 2 Groove(s) 5/64 1 Groove(s) 3/16 1.645 CD .265 dome DUROSHIELD® skirt coated piston; 30 O/S has .221 dome; 60 O/S has .210 dome; .030" Oversize

Make CHEVROLET
Model BEL AIR
Submodel BASE
Beginning Year 1970
Ending Year 1970
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	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7439
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	with Special High Performance Engine Dome Head; with 0.221in Dome Height 0.030in Oversize Powerforged piston Closed Chamber Head 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.645in Compression Distance DUROSHIELD Skirt Coated Piston

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Powerforged; w/Closed chamber cyl. head Spec. Hi-Perf. 0.9897" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.645 CD .265 dome DUROSHIELD® skirt coated piston 30 O/S has .221 dome

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Powerforged piston Closed Chamber Head 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.645in Compression Distance DUROSHIELD Skirt Coated Piston Sold as Set Priced Individually with Special High Performance Engine Dome Head; with 0.221in Dome

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Powerforged piston Closed Chamber Head 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.645in Compression Distance DUROSHIELD Skirt Coated Piston with Special High Performance Engine Dome Head; with 0.221in Dome Height 0.030in Oversize

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Powerforged piston Sold as Set

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Sold as Set Priced Individually Dome Head; with 0.221in Dome Height

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Sold as Set Priced Individually

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Spec. Hi-Perf. .221 dome .030" Oversize Powerforged w/Closed chamber cyl. Head 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.645 CD DUROSHIELD skirt coated piston

Make	CHEVROLET
Model	BEL AIR
Submodel	BASE
Beginning Year	1970
Ending Year	1970
Engine Type	V8
Liter	7.4
CID	454
CC	7441
Engine Family	Chevy big block Mark IV
Engine Size	7.4L/454
Application Notes	Spec. Hi-Perf. Powerforged w/Closed chamber cyl. head 0.9897" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.645 CD .265 dome; DUROSHIELD® skirt coated piston; 30 O/S has .221 dome; 60 O/S has .210 dome; .030" Oversize

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Speed-Pro Forged Pistons L2349F30 Pistons, Forged, Dome, 4.280 in. Bore, Chevy, Set of 8

Speed-Pro Forged Pistons L2349F30 Pistons, Forged, Dome, 4.280 in. Bore, Chevy, Set of 8

Description

Part Type

Specifications

Reference Information

Compatibility

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