JE Pistons 400 SBC FLAT TOP Set of 8 Pistons

Forged from 2618 aluminum, these JE Pistons are built for high-demand performance applications, offering the tensile strength needed for serious engine builds. This set includes eight flat-top pistons designed specifically for the 400 SBC engine, featuring a 4.125-inch bore and a -5.0cc volume, making them a solid choice for those looking to optimize their engine's performance and durability.

JE Pistons brings over 75 years of experience to the table, engineering and machining these pistons entirely in the USA. They incorporate a proprietary Forged Side Relief (FSR) forging design, which helps minimize friction and power loss by reducing skirt width and saving weight with a shorter wrist pin. Depending on the specific application, these pistons may also include an accumulator groove to 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.

This piston kit is designed for a 4.125-inch bore with a 1.000-inch compression distance and uses a 0.927-inch wrist pin. It's important to note that these pistons are not CARB approved and cannot be shipped to California. For those building a high-performance 400 SBC, this set offers a well-built solution proven in various racing environments.