What is the bore size and dish volume for these pistons?

These pistons feature a 3.766 inch bore. The dish volume is -5.0cc, which is designed to work with specific cylinder heads to achieve a desired compression ratio.

Are these pistons compatible with all 305 engines?

This set is specifically for 305 SBC 4V engines. It's important to verify your engine's configuration, including valve count and bore size, to ensure proper fitment.

What does the 'FSR' forging design do?

The proprietary Forged Side Relief (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.

JE Pistons 305 SBC 4V FT APBA Piston Set 174004

Name: JE Pistons 305 SBC 4V FT APBA Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-305-sbc-4v-ft-apba-set-of-8-pistons-t14-295230
Price: 1001.43 USD
Availability: BackOrder

JE Pistons 305 SBC 4V FT APBA Set of 8 Pistons

$1001.43

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 305 SBC 4V FT APBA Set of 8 Pistons. Forged from 2618 aluminum for high-demand performance.

Key Features

This is a set of 8 pistons for 305 SBC 4V FT APBA engines.
Forged in the USA from 2618 aluminum for high tensile strength.
Features a 3.766 inch bore and a -5.0cc dish.
Includes a proprietary Forged Side Relief (FSR) design to minimize friction and save weight.
May include an accumulator groove to improve ring seal and reduce fluttering.
May feature a skirt coating to reduce friction and wear, and lower operating noise.

This piston set is designed for 305 SBC 4V engines with a 3.766 inch bore. Not CARB approved and cannot ship to California.

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Product Details

This is a set of eight JE Pistons, specifically designed for 305 Small Block Chevy (SBC) engines with a 4-valve configuration and a flat-top design. These pistons are forged in the USA from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for engines pushed to their limits in demanding performance applications. They feature a 3.766-inch bore and a -5.0cc dish, meaning they are designed to work with specific cylinder head volumes to achieve a desired compression ratio.

JE Pistons brings over 75 years of experience to the table with these components. They incorporate a proprietary Forged Side Relief (FSR) forging design, which helps minimize friction and power loss by reducing skirt width and using a shorter wrist pin, saving weight in the process. Depending on the specific application, these pistons may also include an accumulator groove to help manage combustion gas pressure, improving ring seal and maintaining consistent power output. Some applications also feature a skirt coating designed to reduce friction and wear on the piston skirts and cylinder walls, which can also lead to quieter operation.

This set is made 100% in the USA, ensuring a high level of manufacturing control. It's important to note that these pistons are not CARB approved and cannot be shipped to California. They are designed for high-performance use and are a solid option for builders looking for proven durability and performance from a well-known name in forged pistons.