Home / Shop / JE Pistons Big Block Chevy Blown Alcohol Series 297812R Pistons, Single - BBC BLN ALKY DM DYKE

JE Pistons Big Block Chevy Blown Alcohol Series 297812R Pistons, Single - BBC BLN ALKY DM DYKE

SKU: JEP297812R

Pistons

JE Pistons

JE Pistons Big Block Chevy Blown Alcohol Series 297812R Pistons, Single - BBC BLN ALKY DM DYKE

SKU: JEP297812R

Pistons

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Description

JE Pistons Big Block Chevy Blown Alcohol Series pistons are perfect for high-boost blown alcohol drag racing! These forged aluminum pistons feature precision CNC-machined ring grooves, valve reliefs for oversized valves, and compatibility with angle milled heads. They include pins, double Spiro locks, double pin oilers, and accumulator grooves. The pistons may be used with buttons (sold separately) if you prefer, in place of Spiro locks. Choose the right pistons to handle your blown setup--JE Pistons Big Block Chevy Blown Alcohol Series pistons.

Part Type

Pistons

Data: v4.2 - Upd: 2026-10-14 11:04:39

Specifications

Product Attributes - Brand: JE Pistons
Product Attributes - Manufacturer's Part Number: 297812R
Product Attributes - Part Type: Pistons
Product Attributes - Product Line: JE Pistons Big Block Chevy Blown Alcohol Series Pistons
Product Attributes - UPC: 193564196835
Product Attributes - Piston Rings Included: No
Product Attributes - Bore (in.): 4.530 in.
Product Attributes - Bore (mm): 115.062mm
Product Attributes - Stroke: 4.000 in.
Product Attributes - Engine Stroke Type: Stock
Product Attributes - Actual Engine Displacement: 8.4L/516
Product Attributes - Rod Length: 6.385 in.
Product Attributes - Piston Style: Dome, with two valve reliefs
Product Attributes - Piston Material: Forged aluminum
Product Attributes - Compression Height (in.): 1.395 in.
Product Attributes - Piston Head Volume (cc): +29.70cc
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: 0.075 in. x 0.064 in. x 0.218 in.
Product Attributes - File Fit: No
Product Attributes - Gapless: No
Product Attributes - Top Ring Thickness: 0.075 in.
Product Attributes - Second Ring Thickness: 0.064 in.
Product Attributes - Oil Ring Thickness: 0.218 in.
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: Designed to fit right exhaust valve orientation. Oil rail support included.

Reference Information

Brand Name/s	JE Pistons
StreetFX SKU	jep297812R
SFX Item ID	4803900
Supplier Item Code	4803900
Manufacturer SKU	297812R
Manufacturer UPC	193564196835

Compatibility

Application Data

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	Designed to fit right exhaust valve orientation. Oil rail support included.

Make	CHEVROLET
Beginning Year	1991
Ending Year	1995
Engine Type	V8
Engine Family	Chevy big block Gen V
Engine Size	7.4L/454
Application Notes	Designed to fit right exhaust valve orientation. Oil rail support included.

Make	CHEVROLET
Beginning Year	1996
Ending Year	2000
Engine Type	V8
Engine Family	Chevy big block Gen VI
Engine Size	7.4L/454
Application Notes	Designed to fit right exhaust valve orientation. Oil rail support included.