What material are these pistons made from?

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

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

The FSR design minimizes friction and power loss. It achieves this through a reduced skirt width and a shorter wrist pin, which also helps save weight.

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

These pistons are specifically designed for the 400 small-block Chevy engine with a 4.145-inch bore and a .305-inch dome volume. It's important to verify these specifications match your engine build. Please note they are not CARB approved and cannot ship to California.

JE Pistons 400 SBC .305 Dome Piston Set 182030

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-t14-295300
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 small-block Chevy engines.
Set includes 8 pistons.
Forged in the USA from 2618 aluminum for high tensile strength.
Features JE Pistons' proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Includes a .305-inch dome volume and a 4.145-inch bore size.
May include an accumulator groove for improved ring seal and consistent power.

This piston set is designed for 400 small-block Chevy engines. Not CARB approved and cannot ship to California.

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Product Details

If you're building a high-performance 400 small-block Chevy engine, a solid set of pistons is crucial. This set from JE Pistons is designed for those demanding applications, offering a .305-inch dome volume and a 4.145-inch bore size. These pistons are forged in the USA using 2618 aluminum, a material known for its high tensile strength, which is exactly what you need when you're pushing an engine hard.

JE Pistons brings over 75 years of experience to the table, and it shows in their design. These aren't just generic pistons; they're engineered specifically for the 400 SBC application to balance durability and performance. You'll find features like their proprietary Forged Side Relief (FSR) design, which helps minimize friction and power loss by reducing skirt width and saving weight with a shorter wrist pin. Depending on the specific application, you might also find an accumulator groove to help reduce combustion gas pressure, improving ring seal and keeping power consistent. Some applications also include a skirt coating to further reduce friction and wear, which can also lead to quieter operation.

This set includes eight pistons, and they are made 100% in the USA. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. They are designed for performance builds and are a solid choice for anyone looking to get the most out of their 400 small-block Chevy.