What is the compression distance and wrist pin diameter for these pistons?

These JE Pistons have a compression distance of 1.100 inches and a wrist pin diameter of 0.927 inches. This information is critical for calculating your engine's final compression ratio when paired with your specific cylinder heads and crankshaft.

Are these pistons suitable for a street-driven vehicle?

While these pistons are built for high-demand performance applications, the skirt coating (if included for this application) can help reduce friction and noise, potentially making them suitable for certain street performance builds. However, they are not CARB approved and cannot be shipped to California, indicating a focus on racing and off-road use.

What does the 'FSR' forging design mean for performance?

The proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss by reducing the piston skirt width. This design also contributes to saving additional weight, which can improve engine responsiveness and overall performance.

JE Pistons 400 SBC .305 Dome Piston Set 182052

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-t14-295317
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 from 2618 aluminum for high-demand performance.

Key Features

Fits 400 SBC engines with a 4.165 inch bore.
Set includes 8 forged pistons made from 2618 aluminum for high tensile strength.
Features a .305 inch dome for specific compression ratio tuning.
Includes a 1.100 inch compression distance and 0.927 inch wrist pin diameter.
Proprietary Forged Side Relief (FSR) design minimizes friction and saves weight.
May include an accumulator groove to improve ring seal and reduce flutter.

This piston set is designed for 400 SBC engines. Not CARB approved and cannot ship to California.

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Product Details

Forged from 2618 aluminum, these JE Pistons are built for high-demand performance applications. This set is specifically designed for the 400 SBC engine, featuring a 4.165 inch bore and a .305 inch dome. The dome shape is engineered to work with specific cylinder head volumes to achieve a target compression ratio, crucial for maximizing power output in performance builds. Each piston is made in the USA, reflecting JE Pistons' commitment to quality and domestic manufacturing.

JE Pistons incorporates advanced design features to enhance durability and performance. The proprietary Forged Side Relief (FSR) forging design reduces skirt width, which minimizes 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 consistent power delivery. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation and longer engine life. These pistons are designed for each specific engine and use application, ensuring optimized performance and durability.

This set includes eight pistons, each with a 1.100 inch compression distance and a 0.927 inch wrist pin diameter. It's important to note that these pistons are not CARB approved and cannot be shipped to California. For builders aiming for serious performance with their 400 SBC, this set offers a well-built foundation for a powerful engine.