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

These pistons have a compression distance of 1.270 inches and utilize a 0.990 inch wrist pin. This specific sizing is crucial for achieving the correct compression ratio and piston-to-valve clearance in your engine build.

What does the Forged Side Relief (FSR) design do?

The FSR design is a proprietary forging technique that reduces skirt width and uses a shorter wrist pin. This helps to minimize friction and power loss, while also saving weight for improved engine performance.

Are these pistons compatible with all Big Block Chevrolet engines?

These pistons are specifically designed for BBC engines with a 4.625 inch bore. While they are intended for Big Block Chevrolet applications, it's essential to verify that this bore size and the overall piston design are compatible with your specific engine block and intended build.

JE Pistons BBC Inv Dome Piston Set 282059

Name: JE Pistons BBC INV DOME Set of 8 Pistons
Brand: JE Pistons
SKU: je-pistons-je-pistons-bbc-inv-dome-set-of-8-pistons-t14-295865
Price: 1052.79 USD
Availability: BackOrder

JE Pistons BBC INV 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 BBC INV DOME Set of 8 Pistons. Forged from 2618 aluminum for high-demand performance.

Key Features

Fits 8-cylinder BBC engines with a 4.625 inch bore.
Forged from 2618 aluminum for high tensile strength in performance applications.
Features an inverted dome design for optimized combustion.
Proprietary Forged Side Relief (FSR) design minimizes friction and power loss.
Includes a 0.990 inch wrist pin.
May include an accumulator groove to reduce ring flutter and improve ring seal.

This piston set is designed for BBC (Big Block Chevrolet) engines with a 4.625 inch bore. Always confirm compatibility with your specific engine build.

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Product Details

Forged from 2618 aluminum, these JE Pistons BBC INV DOME pistons are built to handle the rigors of high-demand performance applications. This set includes eight pistons, each featuring a 4.625-inch bore, a 1.270-inch compression distance, and a 0.990-inch wrist pin. The inverted dome design is specifically engineered for BBC (Big Block Chevrolet) engines, aiming to optimize combustion and power output within its intended use.

JE Pistons applies its extensive experience to create pistons that balance durability and performance. The proprietary Forged Side Relief (FSR) forging design is a key feature, working to minimize friction and power loss by using a reduced skirt width. This design also contributes to weight savings, further enhanced by a shorter wrist pin. 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. Additionally, a skirt coating, if included for your application, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation and longer component life.

Every component in this set is forged and machined entirely in the USA, ensuring a high standard of manufacturing. These pistons are designed specifically for each engine and use application, aiming for optimized performance and durability. Please note that this piston set is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.