Manley Chevrolet Big Block Piston Set - 4.560in Bore 1.245in CH, 43.00 CC

When you're building a high-performance Chevrolet big block engine, the pistons are a critical component that needs to handle serious stress. This Manley Performance Piston Set is designed for builders who demand strength and reliability for their custom engine builds. These aren't just off-the-shelf parts; they're crafted with the kind of attention to detail that professional engine builders trust for both street and track applications.

Manley uses domestic 2618 alloy forgings for these pistons, which is known for its exceptional strength and ability to withstand high temperatures and pressures without deforming. The pistons feature proven cam and barrel skirt profiles, a design that helps them run smoothly and quietly in the cylinder bore while still maintaining a tight seal. This profile also helps reduce friction, contributing to improved power output. You also get exacting standards for the ring lands and grooves, which is crucial for getting a solid seal from your piston rings, leading to better compression and more power. Each set includes premium chrome moly wrist pins, known for their durability.

This set is specifically machined for a 4.560-inch bore with a 1.245-inch compression height and a 43.00 CC combustion chamber volume. Manley's unique fixturing process allows them to machine the skirt and cut the ring grooves in a single operation. This ensures the ring grooves are perfectly square to the piston skirt, which is vital for optimal ring seal and preventing blow-by. While these pistons offer superior performance, please note they 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.