Manley Chevrolet Small Block Piston Set - 4.040in Bore 1.250in CH, -4.00 CC

When you're building a serious Chevrolet Small Block engine, you need parts that can handle the stress. This set from Manley Performance includes their signature "Platinum Series" pistons, designed for demanding builds. You get pistons forged from domestic 2618 alloy, known for its strength, along with tool steel wrist pins and a moly skirt coating to help them slide smoothly against the cylinder walls. These aren't just off-the-shelf parts; they're made with precision, featuring cam and barrel skirt profiles that help generate power while being easy on your cylinder walls.

Manley pays close attention to the details that matter for engine performance. The ring lands and grooves are machined to strict standards, which is crucial for getting a good seal from your piston rings, leading to more power. Their unique manufacturing process allows them to machine the skirt and ring grooves in one operation, ensuring they are perfectly square to each other. This level of precision is what professional engine builders rely on for durability and performance.

This set is for a 4.040-inch bore with a -4.00 CC dish, making it suitable for specific compression ratio targets in your build. Remember, these pistons are not CARB approved and cannot be shipped to California. If you're aiming for serious performance and durability in your Small Block Chevy, these Manley pistons are a solid choice.