Manley Chevrolet LS Piston Set - 4.065in Bore 1.065in CH, -20.00 CC

Built from domestic 2618 alloy forgings, these Manley pistons are designed for serious LS engine builds. The 4.065-inch bore size and -20.00cc dish volume are key specifications for achieving specific compression ratios in performance applications. Manley's commitment to precision is evident in their exacting standards for ring lands and grooves, which directly contribute to improved ring seal and ultimately, more power.

You'll find that Manley incorporates proven cam and barrel skirt profiles on these pistons. This design choice helps manage piston-to-wall clearance, reducing noise and wear on your cylinder walls while still allowing the piston to generate substantial power. They also use unique fixturing that allows skirt turning and ring groove machining in a single operation, ensuring the ring grooves are perfectly square to the skirt. This level of detail is what separates a good engine build from a great one.

This set includes premium chrome moly wrist pins, a solid foundation for durability. For those pushing the limits, Manley offers upgrades to even stronger wrist pin alloys. These pistons are a popular choice among professional engine builders and tuners who demand reliable performance and longevity from their components. Please note that this part is not CARB approved and cannot be shipped to California.