JE Pistons 400 SBC .305 DOME Set of 8 Pistons

What you get in this kit is a complete set of eight forged pistons, designed specifically for the 400 Small Block Chevrolet (SBC) engine. These pistons feature a .305 dome, which is important for setting your compression ratio, and they're sized for a 4.165-inch bore, which is a common upgrade size for the 400 SBC. JE Pistons has been making performance parts for a long time, and these are built in the USA using 2618 aluminum, a strong material that can handle the stresses of a high-performance engine.

JE Pistons uses a proprietary Forged Side Relief (FSR) design on these pistons. This means they have a reduced skirt width and a shorter wrist pin, which helps cut down on friction and saves a bit of weight. Depending on the specific application, these pistons might also come with an accumulator groove to help manage combustion gas pressure, improving ring seal for consistent power. Some applications also include a skirt coating to further reduce friction and wear on the cylinder walls, which can also quiet down the engine a bit. Because they're forged and machined in the USA, you know they're built to handle demanding performance use, whether that's on the drag strip or a dirt track.

This set is intended for performance builds and is not CARB approved, so it cannot be shipped to California. Make sure to check your specific engine build and cylinder head volume to confirm the final compression ratio with these domed pistons.