Hypereutectic Piston Set, 3.83" Bore

The Sealed Power H521ACP30 pistons are constructed from hypereutectic aluminum, offering a balance of durability and performance for engine builds. These pistons feature a dish-top design with no valve reliefs, suitable for specific compression ratio targets. Key specifications include a 3.83-inch bore diameter, a 5.967-inch rod length, and a stock stroke type. These pistons are compatible with Chevrolet SBC SB 350 5.7L engines in standard bore size. They are also listed as fitting 1967-1970 and 1987-1990 Chevrolet Camaro 5.7L V8 engines, as well as Buick Commercial Chassis and Roadmaster models from 1992-1996, and Cadillac Brougham from 1990-1992, all with the V8-5.7L engine.