Manley Small Block Chevy 4 Barrel Class 4.030in Bore -4cc Dish Piston Set

This set includes eight forged pistons designed for Small Block Chevy engines with a 4.030-inch bore. Each piston features a -4cc dish, which is important for setting your compression ratio. These are Manley's "Platinum Series" pistons, built with domestic 2618 alloy forgings known for their strength and performance, and they come standard with premium chrome moly wrist pins.

Manley puts a lot of thought into how these pistons work inside your engine. They use proven cam and barrel skirt profiles that help generate power while being easier on your cylinder walls. The ring lands and grooves are machined to very strict standards, which helps ensure a good seal for the piston rings, leading to more power. They even use a unique fixturing process that allows them to machine the skirt and ring grooves in one operation, making sure the ring grooves are perfectly square to the piston skirt. This attention to detail is why professional engine builders trust Manley.

Keep in mind that these pistons are not CARB approved and cannot be shipped to California. If you're building a high-performance Small Block Chevy, these pistons offer a solid foundation with materials and machining that aim for both power and durability.