JE Pistons Big Block Nitrous Series Dome Top 293085R Pistons, Single - BBC 632 NOS

SKU: JEP293085R

Pistons

JE Pistons

JE Pistons Big Block Nitrous Series Dome Top 293085R Pistons, Single - BBC 632 NOS

SKU: JEP293085R

Pistons

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

JE Pistons big block nitrous series dome top pistons have ring lands designed for nitrous applications. Valve reliefs are designed to accept oversized valves and long-duration, wide-lobe separation camshafts, and they are also compatible with angle milled heads. Precision CNC-machined grooves accept 1/16, 1/16, 3/16 rings. They fit open chamber cylinder heads.

Part Type

Pistons

Data: v4.2 - Upd: 2026-10-14 11:02:33

Specifications

Product Attributes - Brand: JE Pistons
Product Attributes - Manufacturer's Part Number: 293085R
Product Attributes - Part Type: Pistons
Product Attributes - Product Line: JE Pistons Big Block Nitrous Series Dome Top Pistons
Product Attributes - UPC: 193564196651
Product Attributes - Piston Rings Included: No
Product Attributes - Bore (in.): 4.625 in.
Product Attributes - Bore (mm): 117.475mm
Product Attributes - Stroke: 4.250 in.
Product Attributes - Engine Stroke Type: Stock
Product Attributes - Actual Engine Displacement: 9.4L/571
Product Attributes - Rod Length: 6.535 in.
Product Attributes - Piston Style: Dome, with two valve reliefs
Product Attributes - Piston Material: Forged aluminum
Product Attributes - Compression Height (in.): 1.120 in.
Product Attributes - Piston Head Volume (cc): +28.90cc
Product Attributes - Wrist Pin Style: Press-fit or floating
Product Attributes - Wrist Pin Retainers Included: Yes
Product Attributes - Wrist Pin Included: Yes
Product Attributes - Pin Diameter (in.): 0.990 in.
Product Attributes - Piston Ring Thickness: 0.043 in. x 1/16 in. x 3/16 in.
Product Attributes - File Fit: No
Product Attributes - Gapless: No
Product Attributes - Top Ring Thickness: 0.043 in.
Product Attributes - Second Ring Thickness: 1/16 in.
Product Attributes - Oil Ring Thickness: 3/16 in.
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: Designed to fit right exhaust valve orientation. Oil rail support included. Will also work with 638 cubic in. engines with a 4.750 in. stroke and 6.700 in. connecting rod.

Reference Information

Brand Name/s	JE Pistons
StreetFX SKU	jep293085R
SFX Item ID	4806437
Supplier Item Code	4806437
Manufacturer SKU	293085R
Manufacturer UPC	193564196651

Compatibility

Application Data

Make	CHEVROLET
Engine Type	V8
Engine Family	Chevy big block Gen VI
Engine Size	10.3L/632
Application Notes	Designed to fit right exhaust valve orientation. Oil rail support included. Will also work with 638 cubic in. engines with a 4.750 in. stroke and 6.700 in. connecting rod.

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