Mahle MS Chevrolet LS 5.3L 327cid 3.790in Bore x 1.299CH 3.622 Stroke 14.0cc 12.5 CR - Pist Set of 8

What you get in this Mahle piston set are eight forged pistons designed for Chevrolet LS 5.3L (327cid) engines. These pistons are built to handle the demands of a performance rebuild, featuring a 3.790-inch bore and a 14.0cc dome volume, which contributes to a 12.5:1 compression ratio when paired with compatible heads. The 1.299-inch compression height and 0.927-inch pin diameter are key dimensions for proper engine assembly and valve clearance.

These pistons are constructed from 2618 aluminum, a strong and lightweight material commonly used in high-performance applications because of its ability to withstand high temperatures and pressures. They are specifically designed for LS1/LS2/LS6 style cathedral port cylinder heads, ensuring a good match for many popular LS engine builds. Each piston weighs in at 453 grams, which is a notable detail for engine builders balancing rotating assembly components. The 3.622-inch stroke compatibility means these are intended for engines with a specific crankshaft setup.

Keep in mind that these pistons are not CARB approved and cannot be shipped to California. If you're rebuilding the top end of your LS engine and aiming for a significant increase in compression and performance, this Mahle set is a solid option. Always refer to the manufacturer's installation instructions for precise details on ring gap, piston-to-wall clearance, and assembly procedures.