What is the bore size and dome height for these pistons?

These JE Pistons are designed for a 4.155 inch bore. The dome height is .305 inches, which contributes to the engine's compression ratio.

What makes the FSR forging design beneficial?

The Proprietary Forged Side Relief (FSR) design minimizes friction and power loss by reducing skirt width and using a shorter wrist pin. This also helps save weight.

Are these pistons legal for use in California?

No, these pistons are not CARB approved and cannot be shipped to California due to emissions regulations.

JE Pistons 400 SBC .305 Dome Piston Set 182041

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-t14-295311
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

This is a set of 8 pistons for a 400 SBC engine.
Each piston has a 4.155 inch bore and a .305 inch dome height.
Forged in the USA using 2618 aluminum for high tensile strength.
Features JE Pistons' Proprietary Forged Side Relief (FSR) design to minimize friction and save weight.
May include an accumulator groove to improve ring seal and reduce flutter.
Skirt coating may be present to reduce friction, wear, and noise.

This piston set is designed for 400 SBC engines. Always confirm compatibility with your specific engine build and components.

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Product Details

Forged from 2618 aluminum, these JE Pistons are built for high-demand performance applications. This set is specifically for a 400 SBC engine, featuring a 4.155-inch bore and a .305-inch dome height. The dome shape is designed to work with specific cylinder head volumes, contributing to your engine's compression ratio and overall power output.

JE Pistons brings over 75 years of experience to their forged pistons, and these are no exception. They're forged, engineered, and machined entirely in the USA. A notable design feature is the Proprietary Forged Side Relief (FSR) forging. This design reduces skirt width and uses a shorter wrist pin, which helps minimize friction and power loss while also saving weight. Depending on the specific application, these pistons may also include an accumulator groove to help reduce combustion gas pressure, preventing ring flutter and improving ring seal for more consistent power delivery. Some applications also feature a skirt coating that reduces friction and wear on the piston skirts and cylinder walls, which can also lead to quieter operation.

This is a complete set of 8 pistons, designed to provide optimized performance and durability for your engine build. Please 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.