What is the compression distance and pin size for these pistons?

These pistons have a compression distance of 1.000 inches and use a 0.927 inch wrist pin. This is a critical measurement for achieving the correct compression ratio with your cylinder heads and crankshaft.

Are these pistons suitable for all 400 SBC engines?

These pistons are specifically designed for 400 SBC engines with a 4.125 inch bore and an 18-degree cylinder head combustion chamber. It's important to verify compatibility with your specific engine build, including crankshaft stroke and cylinder head volume.

What does the 'FSR' design mean for performance?

The proprietary Forged Side Relief (FSR) design from JE Pistons uses a reduced skirt width and a shorter wrist pin. This configuration helps to minimize friction and reduce overall weight, contributing to improved engine performance and efficiency.

JE Pistons 400SBC 18DEG DOME Set of 8 Pistons 218595

Name: JE Pistons 400SBC 18DEG DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-400sbc-18deg-dome-set-of-8-pistons-t14-295482
Price: 1129.82 USD
Availability: BackOrder

JE Pistons 400SBC 18DEG DOME 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 forged piston set for 400 SBC, 4.125" bore, 18deg dome. Made in USA from 2618 aluminum.

Key Features

Fits 400 SBC engines with a 4.125 inch bore.
Set includes eight pistons, each with a 1.000 inch compression distance and a 0.927 inch pin.
Features an 18-degree dome with a 2.50 cc volume, designed for specific cylinder head configurations.
Constructed from 2618 aluminum, forged in the USA for high tensile strength and durability in performance applications.
Includes JE Pistons' proprietary Forged Side Relief (FSR) design to minimize friction and save weight.
May include an accumulator groove to reduce combustion gas pressure and improve ring seal.

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Product Details

JE Pistons is known for making strong, reliable forged racing pistons, drawing on over 75 years of experience. This set of eight 400 SBC pistons, with an 18-degree dome, is built for high-demand performance applications. Forged in the USA from 2618 aluminum, these pistons offer the high tensile strength needed when you're pushing your engine hard, whether on the track or the street.

These pistons feature JE Pistons' proprietary Forged Side Relief (FSR) design, which helps reduce friction and power loss by using a narrower skirt and a shorter wrist pin, saving weight in the process. Depending on the specific application, they may also include an accumulator groove to manage combustion gas pressure, improving ring seal and keeping power consistent. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation and longer life. Each piston is designed specifically for the 400 SBC engine to ensure optimized performance and durability.

This set includes eight pistons, each with a 4.125-inch bore, a 1.000-inch compression distance, and a 0.927-inch pin. The dome volume is 2.50 cc, designed for an 18-degree cylinder head combustion chamber. Please note that these pistons are not CARB approved and cannot be shipped to California. They are made 100% in the USA.