Manley Chevrolet Small Block Piston Set - 4.030in Bore 1.125in CH, -2.50 CC

Built from domestic 2618 alloy forgings, these Manley pistons are ready for serious work in your Chevrolet Small Block engine. The 4.030-inch bore size is a common starting point for many performance builds, and the -2.50cc dish volume helps achieve a desired compression ratio when paired with specific cylinder heads and crankshafts. These aren't just off-the-shelf parts; they're crafted with the same attention to detail that professional engine builders rely on.

Manley's signature cam and barrel skirt profiles are designed to reduce friction and wear on your cylinder walls while still generating substantial power. You'll also find exacting standards applied to the ring lands and grooves, which is crucial for achieving a solid ring seal and maximizing the power your engine makes. The included tool steel wrist pins are well-built for durability, and Manley's unique fixturing process ensures the ring grooves are perfectly square to the piston skirt, a detail that matters for consistent performance and longevity.

This set is designed for builders who demand reliability and performance. Remember that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.