What material are these JE Pistons made from?

These pistons are forged in the USA using 2618 aluminum. This material is chosen for its high tensile strength, which is essential for high-demand performance engine applications.

What is the purpose of the Forged Side Relief (FSR) design?

The FSR design helps to minimize friction and power loss. It achieves this with a reduced skirt width and a shorter wrist pin, which also contributes to saving weight on the piston assembly.

Are these pistons compatible with all 400 small-block Chevy engines?

This set is designed for the 400 small-block Chevy. It features a 4.135-inch bore and a 0.927-inch wrist pin. Always verify your engine's specific bore size and pin diameter requirements against these specifications.

JE Pistons 400 SBC DOME 18DEG Set of 8 Pistons 213129

Name: JE Pistons 400 SBC DOME 18DEG Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-400-sbc-dome-18deg-set-of-8-pistons-t14-295455
Price: 1129.82 USD
Availability: BackOrder

JE Pistons 400 SBC DOME 18DEG Set of 8 Pistons

$1129.82

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

JE Pistons 400 SBC DOME 18DEG Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Fits 400 small-block Chevy engines.
Set includes 8 forged pistons with a dome design and 18-degree angle.
Forged in the USA using 2618 aluminum for high tensile strength.
Proprietary Forged Side Relief (FSR) design minimizes friction and weight.
Features a 4.135-inch bore and a 0.927-inch wrist pin.
May include accumulator groove for improved ring seal (application dependent).

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Product Details

If you're building a high-performance 400 small-block Chevy engine, these JE Pistons are a solid choice. This set includes eight pistons specifically designed for your engine, featuring a dome shape and an 18-degree piston head angle. JE Pistons has been making forged pistons for over 75 years, and they build these right here in the USA using 2618 aluminum, which gives them the strong tensile strength needed for demanding applications.

What sets these pistons apart is their advanced forging design. The proprietary Forged Side Relief (FSR) design helps reduce friction and power loss by using a narrower skirt and a shorter wrist pin, which also saves weight. Depending on the specific application, these pistons might also include an accumulator groove to help manage combustion gas pressure, improving ring seal for consistent power. Some applications also feature a skirt coating that reduces friction and wear on the piston skirts and cylinder walls, which can also quiet down engine noise. JE Pistons designs each piston specifically for its intended engine and use, aiming for the best balance of durability and performance.

This kit is for the 400 small-block Chevy and includes pistons with a 4.135-inch bore, a 1.250-inch compression distance, and a 0.927-inch wrist pin. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly details.