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JE Pistons 182027 Forged Dome Piston Set Bore Alloy - 4.155 2618 8-Pack

(1970-1980 Chevrolet 400 Small Block)

Part of: JE Pistons Forged Dome Piston Set Bore

Other options in this family: JE Pistons 353906 JE Pistons 186235 JE Pistons 359152 JE Pistons 361278 JE Pistons 258239

Manufacturer

Picture for manufacturer JE Pistons

Part Number

182027
4 reviews
Sale Price

$1,076.99

2 left at this price

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Usually delivered within 2 days

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Product Details

The JE Pistons 182027 forged piston set delivers race-proven performance for high-performance engine builds. Engineered from 2618 aluminum alloy, these pistons feature a 23-degree dome design that increases compression ratio for maximum power output. The solid dome construction provides exceptional strength and heat resistance under extreme cylinder pressures.

Key Specifications:

  • Bore Size: 4.155 inches
  • Compression Distance: 1.000 inch
  • Pin Diameter: 0.927 inch
  • Material: 2618 forged aluminum alloy
  • Crown Design: 23-degree dome (solid)
  • Recommended Ring Set: J10008-4155-5

Performance Features:

  • Application-specific forgings ensure optimized, uniform crown thickness for consistent heat dissipation
  • Contact reduction groove minimizes frictional drag for improved efficiency
  • Accumulator groove increases top ring stability and sealing performance
  • CNC-machined side relief with lower support band adds critical skirt strength
  • Honed pin bores provide precision fit and reduced wear
  • Double pressure-fed pin oilers ensure proper lubrication
  • Oil rail support included for enhanced ring pack stability

Each set includes 8 precisely matched pistons with wire locks included. JE Pistons has been the industry leader in forged racing pistons for over 60 years, trusted by professional engine builders for Chevy, Ford, Mopar, and Buick applications.

Products specifications

Fits

1970-1980 Chevrolet 400 Small Block

Block Height

9

Bore

4.155

Bore (in)

4.155 in.

Bore (mm)

105.537mm

CID

434

Comp Height

1

Comp Ratio @ 58CC

14.7:1

Comp Ratio @ 64cc

13.5:1

Comp Ratio @ 76CC

11.7:1

Compression Distance (in)

1.000 in.

Dome Volume

3

Gram Weight

445

Notes

Oil rail support included. Solid dome design.

Pin Diameter (in)

0.927 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

Dome, with two valve reliefs

Quantity

Sold individually.

Rod

6

Stroke

4

Wrist Pin Style

Press-fit or floating

Add-On

J10008-4155-5

Cylinder Head

CHEVROLET 23 DEG 20/30

Make

Chevrolet

Add-On

927-2750-15-51S

Piston Material

2618

Second Compression Ring Thickness

0.064

Forging Type

Round

Category Hierarchy

Pistons>Piston Kits

Piston Pin Material

5115

Engine

SMALL BLOCK CHEVROLET

Piston Volume

6.2

Ringset Included

No

Piston Head Type

Dome

Product Market

Domestic

Industry

Automotive

Bore Diameter

4.155

Piston Avg Wt

449

Oil Ring Thickness

0.218

Piston Pin Length

2.750

Piston Pin Wall Thickness

0.150

Piston Pin Outside Diameter

0.927

Out of Stock Message

Call for Availability

Compression Height

1.000

Top Compression Ring Thickness

0.064

Add-On

927-042-CS

Wrist Pin Outer Diameter

0.927

Prop 65

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

Piston Quantity

8

Order #5699<br><br>Top notch company. cheap prices, fast shipping and excellent customer service. will definitely buy from again. thanks!<br><br>

I reciently ordered some spark plug wires from Autoplicity and I must say it was a great experience. The shipping was fast and they had the best price I could find. I will def order parts for my truck from them again.

Ordered Sunday and recieved product Tuesday .. What more can u ask for? Great Seller!

First time customer and I'll be back! Great prices, and rediculously fast shipping. Ordered Sunday night, delivered Wednesday morning. Couldn't ask for better service.

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