Mahle MS Piston Set SBC 383ci 4.03in Bore 3.75in Stroke 6.0in Rod .927 Pin 11cc 13.7 CR Set of 8

These Mahle MS forged pistons are built for serious performance in a Chevrolet Small Block 383 cubic inch engine. They feature a 4.030 inch bore and are designed to work with a 3.75 inch stroke crankshaft and a 6.0 inch connecting rod, creating a displacement of 383 cubic inches. The 0.927 inch wrist pin is a standard size for many performance applications, and the 11cc dish volume combined with your cylinder head chamber volume will determine your final compression ratio. With these pistons, you can expect a compression ratio of 13.7:1, which is suitable for high-performance street or race applications using premium fuel.

Mahle uses a 2618 aluminum alloy for these pistons, a well-known material in racing for its strength and durability under high temperatures and pressures. This alloy offers excellent resistance to detonation and fatigue, crucial for engines that see hard use. Each piston weighs approximately 470 grams, which is a good balance for performance without being excessively heavy. The design accounts for the specific requirements of a 383ci build, ensuring proper piston-to-wall clearance and ring land integrity for longevity and optimal sealing.

This set includes eight pistons, enough for a complete V8 engine. Please note that these pistons are not CARB approved and cannot be shipped to California due to emissions regulations. They are intended for off-road or racing use where emissions compliance is not a factor. Ensure you have the correct supporting components, such as appropriate cylinder heads and camshaft, to achieve the desired performance from this high-compression piston setup.