Mahle MS TransAm TA2 LS3 Flat Top Piston Set 4.075 Bore 3.622 Stroke-.4cc 10.7 CR Set of 8 Powerpak+

This Mahle PowerPak+ piston set gives you the core components for rebuilding or upgrading your Chevrolet LS engine. You get a complete set of eight flat-top pistons, designed for the LS3 engine and specifically homologated for TransAm TA2 racing. These pistons are gasported, which helps manage ring seal and reduce blow-by for improved performance. They are built for a 4.075-inch bore and feature a -0.4cc dish, resulting in a 10.7:1 compression ratio with the specified stroke and rod length.

Mahle uses 2618 aluminum for these pistons, a strong material commonly used in high-performance applications where durability under stress is critical. Each piston weighs 517 grams, contributing to a well-balanced rotating assembly. The compression height is 1.330 inches, and they utilize a 0.945-inch wrist pin. This set is engineered for a 3.622-inch stroke with a 6.098-inch rod, making it suitable for 378 cubic inch displacements. The gas porting is a notable feature, helping to keep the piston rings seated firmly against the cylinder wall, which is crucial for maintaining consistent power and reducing oil consumption under demanding conditions.

This piston set is part of Mahle's PowerPak+ offering, which typically means it's designed to work seamlessly with other Mahle components for a complete, high-performance engine build. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and break-in procedures to ensure optimal performance and longevity.