GM LS1 Cast Piston Set 5.7L 97-04

The GM LS1 Cast Piston Set 5.7L 97-04 by Sealed Power delivers a complete eight-piston solution engineered for General Motors LS-series engine platforms. This hypereutectic cast piston set is manufactured to OEM specifications and designed to handle the demands of both stock and moderately modified 5.7L engines, offering proven durability and performance reliability across a wide range of applications from street driven vehicles to weekend track duty.

Each piston features a 3.907-inch bore diameter matched to GM LS1 block specifications, with ring groove dimensions of 1.50 x 1.50 x 3.00 mm that accommodate standard LS-series ring packages. The hypereutectic cast construction provides excellent thermal stability and corrosion resistance compared to forged alternatives, while the coated skirt design reduces friction and minimizes scuffing risk during engine break-in and operation. This material composition makes hypereutectic pistons particularly well-suited for engines operating in varying temperature conditions without the added expense of forged units.

This piston set addresses the needs of LS1 engine builders and rebuilders who require a cost-effective replacement set that maintains OEM-level fitment and performance standards. Whether replacing worn pistons in a 97–04 LS1 engine, restoring a classic Chevrolet Corvette or truck platform, or building a reliable street engine, Sealed Power's hypereutectic design delivers the thermal and mechanical stability expected from a major OEM supplier. The complete eight-piston set eliminates the need for individual purchases and ensures matched performance across all cylinders.