What material are these JE Pistons made from?

These pistons are forged from 2618 aluminum. This alloy is chosen for its high tensile strength, making it well-suited for high-performance and demanding engine applications.

What is the purpose of the FSR forging design?

The Proprietary Forged Side Relief (FSR) design helps to minimize friction and power loss. It achieves this through a reduced skirt width and a shorter wrist pin, which also contributes to saving weight.

Are these pistons compatible with all 400 SBC engines?

This set is specifically designed for the 400 small-block Chevy engine with a 4.155-inch bore. While designed for this application, it's always recommended to verify compatibility with your specific engine build and components.

JE Pistons 400 SBC Flat Top Piston Set 181944

Name: JE Pistons 400 SBC FLAT TOP Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-400-sbc-flat-top-set-of-8-pistons-t14-295262
Price: 1052.79 USD
Availability: BackOrder

JE Pistons 400 SBC FLAT TOP Set of 8 Pistons

$1052.79

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 FLAT TOP 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 eight flat-top pistons with a -5.0cc dish.
Forged in the USA from 2618 aluminum for high tensile strength.
Features JE Pistons' Proprietary Forged Side Relief (FSR) design to minimize friction and weight.
Includes 0.927-inch wrist pins.
Designed specifically for each engine and use application for optimized performance and durability.

This piston set is designed for 400 small-block Chevy engines. Always confirm compatibility with your specific engine build.

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Product Details

If you're building a high-performance 400 small-block Chevy, these JE Pistons are a solid choice for your engine. This set includes eight flat-top pistons, each forged from 2618 aluminum right here in the USA. This material is known for its high tensile strength, which is exactly what you need when you're pushing an engine hard, whether it's for drag racing or serious street performance.

JE Pistons has been making performance pistons for over 75 years, and they've put that experience into designs like their Proprietary Forged Side Relief (FSR) forging. This 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 feature an accumulator groove to help manage combustion gas pressure, leading to better ring seal and more consistent power. Some applications also include a skirt coating to further reduce friction and wear, which can also quiet down the engine operation.

This kit is designed specifically for the 400 SBC engine, with a 4.155-inch bore and a flat-top design that offers a -5.0cc dish. The included wrist pin is 0.927 inches. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For optimal installation and performance, always refer to the manufacturer's detailed instructions.