Engines and Components› Pistons and Piston Rings

JE Pistons

BBC 20'' -4.600/.990/18CC

$1,281.66

SKU: J001 377886

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The JE Pistons 377886 piston set is a high-performance, forged 2618 alloy piston set designed for Chevrolet Big Block engines. Featuring a dome crown type, these pistons have a 4.600-inch bore, a 1.120-inch compression distance, and an 0.990-inch wrist pin diameter. The set includes 8 pistons with a dome volume of 18.00 cc, making them suitable for custom high-performance engine builds, often associated with 20-degree valve angle series cylinder heads.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandJE Pistons
Part NumberJ001 377886

Videos

Designed for Big Power: 24° Big Block Chevy Forged Pistons from JE

Designed for Big Power: 24° Big Block Chevy Forged Pistons from JE
Big Block Chevy Gets Piston Cooling Oil Jets

Big Block Chevy Gets Piston Cooling Oil Jets

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy