CP Pistons Chevy LS2 Bore 4.005in - Stroke 4.125in - -23.9cc Dish - Set of 8

This is a set of eight forged pistons from CP Pistons, specifically made for Chevy LS2 engines. They feature a 4.005-inch bore and a 4.125-inch stroke, with a -23.9cc dish volume. These pistons are designed for builders looking to assemble a high-performance LS2 engine, whether for a street car, track car, or dedicated race application. The forged construction means they are built to handle significantly more stress and heat than cast pistons, making them a solid choice for boosted or high-compression builds.

CP Pistons are well-known in the performance engine building community for their robust construction and precise manufacturing. These particular pistons are forged from high-strength aluminum alloy, which offers a good balance of durability and weight. The -23.9cc dish is a key specification that helps determine the final compression ratio when paired with specific cylinder heads and crankshafts. This dish volume is often chosen to achieve a desired compression ratio for naturally aspirated builds or to provide a slight quench area for forced induction setups. The 4.005-inch bore is a common size for LS2 builds, often used when a slight overbore is needed to clean up cylinder walls or achieve a specific displacement.

When installing these pistons, remember they are a performance component and will require proper balancing with other rotating assembly components like the crankshaft and connecting rods. You'll also need to ensure your cylinder walls are honed to the correct specification for piston ring seal. This set includes eight pistons, ready for your next engine build. Please note that this part is not CARB approved and cannot be shipped to California.