Forged Piston Set, -21cc Dish

The DSS Racing 1-2325-4030 FX Series forged piston set is engineered for 383 cubic inch Small Block Chevy engines with a 4.030-inch bore. These pistons are crafted from a premium 2618 alloy and manufactured in the USA, ensuring durability and high performance. Key specifications include a -21cc dish top, providing a compression ratio of 10.1:1 with a 58cc chamber, 9.51:1 with a 64cc chamber, and 9:1 with a 70cc chamber. They feature a 1.400-inch compression height, a 0.927-inch pin diameter, and are designed for a 5.700-inch connecting rod length with a 3.800-inch crankshaft stroke. The ring groove specifications are 1.2/1.2/3MM. These pistons are suitable for use with SBC 23-degree cylinder heads and are designed for zero deck height (9.000-inch TDC assembly height). Available options include different piston series (FX-1, FX-2, FX-3) and ring kit configurations. The FX-3 series, for example, includes features like lateral gas ports, an XR .225 wall pin upgrade, and Spiro-Locs for enhanced performance and durability. The pistons are also compatible with blower, turbo, and NOS applications.