Manley Chevrolet LS Piston Set - 4.065in Bore 1.304in CH, -4.00 CC

When you're building a high-performance Chevrolet LS engine, you need pistons that can handle the stress and deliver consistent power. This set from Manley Performance includes eight forged pistons, each measuring a 4.065-inch bore with a 1.304-inch compression height and a -4.00cc dish volume. These aren't just any pistons; they're crafted from domestic 2618 alloy, a material known for its exceptional strength and ability to perform under demanding conditions. Manley uses these robust forgings to create pistons with proven cam and barrel skirt profiles, designed to work with the cylinder walls efficiently while maximizing power output.

What sets these pistons apart is the attention to detail in their construction. The ring lands and grooves are machined to very precise standards, which is crucial for achieving a tight seal with your piston rings. This improved ring seal means better compression and more power getting to the crankshaft. Manley's unique manufacturing process allows them to machine the skirt and cut the ring grooves in a single operation. This ensures the ring grooves are perfectly square to the piston skirt, a detail that professional engine builders rely on for ultimate reliability and performance. Each set also comes standard with tool steel wrist pins, known for their durability, and many part numbers include moly skirt coatings to further reduce friction and wear.

This set is a solid choice for anyone looking to build a serious LS engine. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For optimal installation and performance, always refer to the manufacturer's detailed installation instructions and recommended clearances.