CHEVROLET 400 ROD 5.7 SOLID DOME 3.3CC 2V KB HYPER PISTON SET

The United Engine & Machine Co KB182.040 is a set of 8 Keith Black hypereutectic pistons designed for high-performance applications including marine, drag race, circle track, street, and towing. These pistons feature a dome with a 3.3cc volume and a bore size of 4.165 inches. They are constructed from a low-expansion 390 alloy with 16 percent silicon, allowing for a tighter piston-to-wall running clearance and are heat-treated to T6 standards, making them 30% stronger than ordinary pistons.

They fit a 377 stroke with a 3.480-inch crankshaft and a 5.700-inch rod length, or a 400 stroke with a 3.750-inch crankshaft and a 5.565-inch rod length. The set includes wrist pins and spiral lock rings, but piston rings are sold separately.