Manley Chevrolet Small Block Piston Set - 4.030in Bore 1.550in CH, -4.00 CC

When you're rebuilding the heart of your Chevrolet small block engine for serious performance, the pistons are a critical component. This set from Manley Performance is built for demanding applications where strength and reliability are paramount. They're designed to handle the stresses of high compression and aggressive tuning, making them a solid choice for engine builders looking to extract maximum power and ensure longevity.

Manley uses domestic 2618 alloy forgings for these pistons, which offers superior strength compared to cast aluminum. This material is well-suited for engines that will see high RPMs and significant cylinder pressure. The pistons feature proven cam and barrel skirt profiles, which help 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 essential for achieving a tight ring seal and maximizing combustion efficiency. This attention to detail means you get more power out of every drop of fuel.

Included with this set are premium chrome moly wrist pins, known for their durability. Manley's unique manufacturing process allows them to machine the skirt and ring grooves in a single operation, ensuring perfect squareness between the two. This precision is key to consistent performance and ring seal under load. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a complete build, you'll want to ensure you have the correct rings and connecting rods to match these high-performance pistons.