JE Pistons 400 SBC DOME 18DEG Set of 8 Pistons

If you're building a high-performance 400 Small Block Chevy engine, a solid set of pistons is where you start. This set from JE Pistons is designed specifically for that application, giving you the foundation for serious power. JE Pistons has been making forged pistons for over 75 years, and they build these right here in the USA using 2618 aluminum, which has the high tensile strength you need for demanding builds.

What sets these apart is JE's proprietary Forged Side Relief (FSR) design. This helps minimize friction and power loss by using a reduced skirt width, and it also saves weight with a shorter wrist pin. Depending on the specific engine, you might also find an accumulator groove, which helps reduce combustion gas pressure to keep your rings sealed tight and maintain consistent power. Some applications also include a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, which can also help quiet things down a bit.

This is a set of 8 pistons, each with a dome designed for an 18-degree cylinder head application. They have a 4.145-inch bore and come with a 0.927-inch pin. Keep in mind these are not CARB approved and cannot be shipped to California. For a high-performance build, these pistons offer a well-built option forged and machined entirely in the USA.