Manley Chevrolet LS Piston Set - 3.910in Bore 1.313in CH, -4.00 CC

If you're building a high-performance Chevrolet LS engine, getting the right pistons is a critical step. These Manley Performance pistons are forged from 2618 alloy, a material known for its strength and ability to handle the stresses of powerful engines. They feature a -4.00 CC dish, which is important for setting your compression ratio, and a 3.910-inch bore size. The 1.313-inch compression height is also key for proper piston-to-valve clearance and deck height.

Manley uses proven cam and barrel skirt profiles on these pistons. This design helps reduce friction and wear on your cylinder walls while still allowing the piston to generate substantial power. They also pay close attention to the ring lands and grooves, machining them to exacting standards. This ensures a better seal with your piston rings, which means more power and better efficiency from your engine. The included wrist pins are made from Chrome Moly, offering good durability for most performance applications. Manley's unique manufacturing process allows them to machine the skirt and ring grooves in one operation, ensuring they are perfectly square to each other for optimal performance.

These pistons are a solid choice for serious engine builders looking for reliable components for their LS project. Keep in mind that these are not CARB approved and cannot be shipped to California. You'll want to refer to your engine build specifications for exact clearance requirements and compression ratio calculations.