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JE Pistons 257963 Forged Flat Top Piston Set Bore - 4.600 8-Piece

Manufacturer

Picture for manufacturer JE Pistons

Part Number

257963
5 reviews
Sale Price

$1,076.99

Estimated ship date Sunday, November 08

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Product Details

The JE Pistons 257963 is a premium forged piston set engineered for high-performance racing applications. Constructed from 2618 aluminum alloy, this 8-piece set delivers exceptional strength and thermal stability under extreme conditions. Each piston features a flat top design with a 4.600-inch bore diameter, 1.245-inch compression distance, and 0.990-inch pin diameter.

Key Features:

  • Application-specific forgings for optimized, uniform crown thickness
  • Contact reduction groove to minimize frictional drag and increase horsepower
  • Accumulator groove for enhanced top ring stability and superior sealing
  • CNC-machined side relief with lower support band for additional skirt strength
  • Honed pin bores with double pressure-fed pin oilers for improved lubrication
  • Wire locks included for secure pin retention
  • Oil rail support included for proper ring support and sealing

JE Pistons are precision-matched sets to ensure balanced engine operation. For over 60 years, JE Pistons has been the industry leader in forged racing pistons for domestic V8 engines. Recommended ring set: J100L8-4600-5 (sold separately).

Products specifications

Block Height

9.78

Bore

4.6

Bore (in)

4.600 in.

Bore (mm)

116.840mm

CID

532

Comp Height

1.245

Comp Ratio @ 110cc

9.8:1

Comp Ratio @ 118cc

9.2:1

Comp Ratio @ 124cc

8.9:1

Compression Distance (in)

1.245 in.

Dome Volume

-3

Gram Weight

631

Notes

Oil rail support included.

Oversize

0.125

Pin Diameter (in)

0.990 in.

Piston Head Volume (cc)

+3.00cc

Piston Material

Forged aluminum

Piston Ring Thickness

1/16 in. x 1/16 in. x 3/16 in.

Piston Style

Flat top, with single valve relief

Quantity

Sold individually.

Rod

6.535

Stroke

4

Wrist Pin Style

Press-fit or floating

Make

Chevrolet

Piston Pin Wall Thickness

0.180

Piston Avg Wt

637

Oil Ring Thickness

0.218

Piston Pin Outside Diameter

0.990

Cylinder Head

OPEN CHAMBER

Out of Stock Message

Call for Availability

Compression Height

1.245

Forging Type

Round

Second Compression Ring Thickness

0.064

Bore Diameter

4.600

Add-On

990-042-CS

Category Hierarchy

Pistons>Piston Kits

Industry

Automotive

Ringset Included

No

Add-On

990-2930-18-51S

Piston Pin Length

2.930

Product Market

Domestic

Add-On

J100L8-4600-5

Piston Volume

-3

Engine

BIG BLOCK CHEVY

Piston Material

2618

Piston Pin Material

5115

Top Compression Ring Thickness

0.064

Piston Head Type

Flat

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Piston Quantity

8

Quick checkout..... Great prices!!! Very excited to see the product!!!

Super easy to buy and checkout!

Quick and easy, lowest price available, plus free shipping!

Fast shipping and great prices. Amazon Payments was a breeze to use.

Great product at the lowest price on he web. Fast shipping as well. Will be doing business with again. - Adam

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