Mahle MS Chevrolet LS 5.3L 329cid 3.800in Bore x 1.304CH 3.622 Stroke 8.5cc 11.5 CR - Pist Set of 8

If you're rebuilding the heart of your Chevrolet LS engine, this Mahle MS piston set is built for serious performance. Designed for the 5.3L 329 cubic inch LS engine, these pistons are specifically made to work with LS1, LS2, and LS6 style cathedral port cylinder heads. They feature a 3.800-inch bore and are engineered to achieve an 11.5:1 compression ratio, which is a notable bump over stock, giving your engine more power and responsiveness.

Mahle uses 2618 aluminum for these pistons, a strong material known for its durability and ability to handle high temperatures and pressures common in performance applications. Each piston weighs in at 447 grams and comes with a 0.927-inch pin. The dome volume is 8.5cc, and the compression height is 1.304 inches, all working together to achieve that 11.5 CR with a 3.622-inch stroke and a 6.125-inch rod. This set includes all eight pistons needed for a full engine rebuild.

Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a complete engine build, ensure you have the correct supporting components like rings, connecting rods, and cylinder heads that are compatible with this piston configuration.