What is the dome volume and bore size for this piston set?

This JE Pistons set is designed for a 400 SBC engine with a 4.125 inch bore and features a .305 inch dome volume. This specific sizing is intended to optimize performance and durability for that engine configuration.

Are these pistons suitable for a street-driven vehicle?

These pistons are forged from 2618 aluminum and feature designs like FSR to handle high-demand performance applications. While they can be used in street builds, they are primarily engineered for racing and high-stress environments where durability and power are paramount.

What does the Forged Side Relief (FSR) design do?

The FSR design from JE Pistons helps minimize friction and power loss by using a reduced skirt width and a shorter wrist pin. This also contributes to saving weight on the piston assembly.

JE Pistons 400 SBC .305 Dome Piston Set 182058

Name: JE Pistons 400 SBC .305 DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-400-sbc-305-dome-set-of-8-pistons-t14-295322
Price: 1052.79 USD
Availability: BackOrder

JE Pistons 400 SBC .305 DOME 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 .305 DOME Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Fits 400 SBC engines with a 4.125 inch bore.
Set includes eight forged pistons with a .305 inch dome volume.
Forged in the USA from 2618 aluminum for high tensile strength.
Features proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
May include an accumulator groove for improved ring seal and consistent power.
Skirt coating (application dependent) reduces friction, wear, and operating noise.

This piston set is designed for 400 SBC engines with a 4.125 inch bore. Not CARB approved and cannot ship to California.

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Product Details

If you're rebuilding a high-performance 400 SBC engine, getting the right pistons is crucial for durability and power. This set of eight forged pistons from JE Pistons is built to handle the demands of serious performance applications. They are forged and machined entirely in the USA, using 2618 aluminum, which gives them the strong tensile strength needed for high-stress environments.

JE Pistons has over 75 years of experience, and they apply that knowledge to 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 may also feature an accumulator groove to help control combustion gas pressure, leading to better ring seal and consistent power. Some applications also include a skirt coating to further reduce friction and noise, while also cutting down on wear inside the cylinder walls.

This set is designed specifically for the 400 SBC engine with a 4.125 inch bore and a .305 inch dome volume, intended to optimize performance and durability. It's important to note that these pistons are not CARB approved and cannot be shipped to California. For a robust rebuild that's proven on the track, these JE Pistons are a solid choice.