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

This piston set is designed for a 4.010 inch bore, which is 0.030 inches over the standard 4.000 inch bore for a 350 engine. The compression distance is 1.250 inches.

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

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

Are these pistons suitable for all 350 engines?

These pistons are specifically designed for performance applications and are forged from 2618 aluminum for high-demand use. While they fit the 350 SBC engine family, their suitability depends on your specific build's compression ratio, camshaft, and intended use. They are not CARB approved for use in California.

JE Pistons 350 SBC 20/30 Dome Piston Set 217241

Name: JE Pistons 350 SBC 20/30 DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-350-sbc-20-30-dome-set-of-8-pistons-t14-295464
Price: 1052.79 USD
Availability: BackOrder

JE Pistons 350 SBC 20/30 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 350 SBC 20/30 DOME Set of 8 Pistons. Forged in the USA from 2618 aluminum for high-demand performance.

Key Features

Fits 350 SBC engines.
Set includes 8 forged pistons.
Forged in the USA using 2618 aluminum for high tensile strength.
Features proprietary Forged Side Relief (FSR) design to minimize friction and power loss.
Designed specifically for each engine and use application for optimized performance and durability.
Piston set is 0.030 inch overbore (4.010" bore) with a dome top and 13.0 cc volume.

This piston set is designed for 350 Small Block Chevy engines with a 4.010 inch bore. Please verify compatibility with your specific engine build.

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Product Details

If you're rebuilding the heart of your classic 350 Small Block Chevy, choosing the right pistons is crucial for both performance and longevity. This set of eight JE Pistons is forged from 2618 aluminum, a material known for its high tensile strength, making it well-suited for the demands of performance engines. These aren't just generic pistons; JE Pistons applies its decades of experience to design each set specifically for the intended engine and application, aiming for an optimal balance of durability and power output.

You'll find features like the proprietary Forged Side Relief (FSR) design, which helps minimize friction and power loss by using a reduced skirt width and a shorter wrist pin, contributing to weight savings. Depending on the specific application, these pistons may also include an accumulator groove to help manage combustion gas pressure, reducing ring flutter and improving ring seal for more consistent power delivery. Some applications also benefit from a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, while also helping to quiet down engine noise. Every step, from forging to machining, is done right here in the USA.

This set is specifically sized for a 4.010-inch bore and features a dome design with a 13.0 cc volume, intended to work with specific compression ratios. The wrist pin diameter is 0.927 inches, and the compression distance is 1.250 inches. Please note that these pistons are not CARB approved and cannot be shipped to California. They are designed for high-demand performance applications where strength and reliability are paramount.