Home / Shop / Speed-Pro Forged Pistons L2323F40 Pistons, Forged, Dish, 4.165 in. Bore, Oldsmobile, Set of 8

Speed-Pro Forged Pistons L2323F40 Pistons, Forged, Dish, 4.165 in. Bore, Oldsmobile, Set of 8

SKU: SLPL2323F40

Pistons

Sealed Power

Speed-Pro Forged Pistons L2323F40 Pistons, Forged, Dish, 4.165 in. Bore, Oldsmobile, Set of 8

SKU: SLPL2323F40

Pistons

Sale ends in Calculating... Wed 14 Oct, 7:01 am AEST

BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.

We accept

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: L2323F40
Product Attributes - Part Type: Pistons
Product Attributes - Product Line: Speed-Pro Forged Pistons
Product Attributes - UPC: 087674134378
Product Attributes - Piston Rings Included: No
Product Attributes - Bore (in.): 4.165 in.
Product Attributes - Bore (mm): 105.791mm
Product Attributes - Stroke: 4.250 in.
Product Attributes - Engine Stroke Type: Stock
Product Attributes - Rod Length: 6.735 in.
Product Attributes - Piston Style: Dish, with no valve reliefs
Product Attributes - Piston Material: Forged aluminum
Product Attributes - Compression Height (in.): 1.735 in.
Product Attributes - Piston Head Volume (cc): +18.00cc
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.): 0.980 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: 0.142 inch deep dish design. DurOshield® coated piston skirt.

Reference Information

Brand Name/s	Sealed Power
StreetFX SKU	slpL2323F40
SFX Item ID	5028818
Supplier Item Code	5028818
Manufacturer SKU	L2323F40
Manufacturer UPC	N/A
Alternative References	SEAL2323F40

Compatibility

Application Data

Make OLDSMOBILE
Beginning Year 1968
Ending Year 1970
Engine Type V8
Engine Family Oldsmobile V8
Engine Size 7.5L/455
Application Notes Original equipment style replacement for high compression models.
Make OLDSMOBILE
Beginning Year 1968
Ending Year 1976
Engine Type V8
Engine Family Oldsmobile V8
Engine Size 7.5L/455
Application Notes Deck clearance 0.030 inch. Skirt clearance 0.0025 inch.

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High Compression .040" Oversize Powerforged 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.735 CD .142 dish DUROSHIELD skirt coated piston

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High Compression 0.040in Oversize Powerforged piston 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.735in Compression Distance 0.142in Deep Recess DUROSHIELD Skirt Coated Piston

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High comp. Powerforged 0.9805" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.735 CD .142 dish DUROSHIELD« skirt coated piston; .040" Oversize

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High comp. Powerforged 0.9805" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.735 CD .142 dish DUROSHIELD® skirt coated piston; .040" Oversize

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High comp. Powerforged 0.9805" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.735 CD .142 dish DUROSHIELD® skirt coated piston

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High comp. Powerforged 2 Groove(s) 5/64 1 Groove(s) 3/16 1.735 CD .142 dish DUROSHIELD skirt coated piston .040" Oversize

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High comp. Powerforged 2 Groove(s) 5/64 1 Groove(s) 3/16 1.735 CD .142 dish DUROSHIELD® skirt coated piston .040" Oversize

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High comp. Powerforged 2 Ring(s) 0.9805" Pin Dia. 5/64 Groove 1 Ring(s) 3/16 Groove 1.735 CD .142 dish DUROSHIELD« skirt coated piston; .040" Oversize

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	Powerforged High comp. 0.9805" Pin Dia. 2 Ring(s) 5/64 Groove 1 Ring(s) 3/16 Groove 1.735 CD .142 dish DUROSHIELD® skirt coated piston .040" Oversize

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	Powerforged piston 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.735in Compression Distance 0.142in Deep Recess DUROSHIELD Skirt Coated Piston High Compression 0.040in Oversize

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1969
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	Powerforged piston 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.735in Compression Distance 0.142in Deep Recess DUROSHIELD Skirt Coated Piston Sold as Set Priced Individually High Compression 0.040in Oversize

Make OLDSMOBILE
Model 442
Submodel BASE
Beginning Year 1968
Ending Year 1969
Engine Type V8
Liter 7.5
CID 455
CC 7456
Engine Family Oldsmobile V8
Engine Size 7.5L/455
Application Notes Powerforged piston Sold as Set
Make OLDSMOBILE
Model 442
Submodel BASE
Beginning Year 1968
Ending Year 1969
Engine Type V8
Liter 7.5
CID 455
CC 7456
Engine Family Oldsmobile V8
Engine Size 7.5L/455
Application Notes Sold as Set Priced Individually
Make OLDSMOBILE
Model 442
Submodel BASE
Beginning Year 1968
Ending Year 1969
Engine Type V8
Liter 7.5
CID 455
CC 7456
Engine Family Oldsmobile V8
Engine Size 7.5L/455

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1970
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High Compression .040" Oversize Powerforged 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.735 CD .142 dish DUROSHIELD skirt coated piston

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1970
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High Compression .040" Oversize Powerforged 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.735 CD .142 dish DUROSHIELD skirt coated piston

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1970
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High Compression .040" Oversize Powerforged 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.735 CD .142 dish DUROSHIELD skirt coated piston

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1970
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High Compression .040" Oversize Powerforged 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.735 CD .142 dish DUROSHIELD skirt coated piston

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1970
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High Compression .040" Oversize Powerforged 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.735 CD .142 dish DUROSHIELD skirt coated piston

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1970
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High Compression .040" Oversize Powerforged 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.735 CD .142 dish DUROSHIELD skirt coated piston

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1970
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High Compression .040" Oversize Powerforged 3 Ring Groove Piston Ring Groove Widths: 5/64, 5/64, 3/16 (in.) 1.735 CD .142 dish DUROSHIELD skirt coated piston

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1970
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High Compression 0.040in Oversize Powerforged piston 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.735in Compression Distance 0.142in Deep Recess DUROSHIELD Skirt Coated Piston

Make	OLDSMOBILE
Model	442
Submodel	BASE
Beginning Year	1968
Ending Year	1970
Engine Type	V8
Liter	7.5
CID	455
CC	7456
Engine Family	Oldsmobile V8
Engine Size	7.5L/455
Application Notes	High Compression 0.040in Oversize Powerforged piston 3 Ring Piston Ring Groove Widths: 5/64in , 5/64in , 3/16in 1.735in Compression Distance 0.142in Deep Recess DUROSHIELD Skirt Coated Piston

Loading compatibility information...

Keep shopping

Select Your Vehicle

Speed-Pro Forged Pistons L2323F40 Pistons, Forged, Dish, 4.165 in. Bore, Oldsmobile, Set of 8

Speed-Pro Forged Pistons L2323F40 Pistons, Forged, Dish, 4.165 in. Bore, Oldsmobile, Set of 8

Description

Part Type

Specifications

Reference Information

Compatibility

More from Sealed Power

Speed-Pro Hypereutectic Pistons H345DCP Pistons, Hypereutectic, Flat, 4 in. Bore, Chevy, Small Block, Set of 8

Speed-Pro Hypereutectic Pistons H860CP30 Pistons, Hypereutectic, Flat, 4.030 in. Bore, 3.75 in. Stroke, Chevy, Set of 8

Speed-Pro Hypereutectic Pistons H273CP Pistons, Hypereutectic, Flat, 4.000 in. Bore, Ford, Set of 8

Speed-Pro Piston Pin Lock Rings and Spirolox LR-63 Ring Each

Speed-Pro Forged Pistons for 1962-1965 CORVETTE - L2166AF30 Pistons, Forged, Dome with Two Valve Reliefs, 4.030 in. Bore, Chevy, Small Block, Set of 8

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