Manley Chevrolet Big Block Piston Set - 4.530in Bore 1.645in CH, -3.00 CC

If you're building a high-performance Chevrolet big block engine, Manley's 696030-8 piston set is a solid choice. These pistons are forged from domestic 2618 alloy, a material known for its strength and ability to handle the demands of powerful engines. They feature a 4.530-inch bore size and a -3.00cc dish, which is crucial for achieving your target compression ratio when paired with specific cylinder heads and head gaskets. The cam and barrel skirt profiles are designed to reduce friction and wear on your cylinder walls while still generating significant power.

Manley puts a lot of attention into the details that matter for engine builders. The ring lands and grooves are machined to very precise standards, which helps ensure a good seal with your piston rings, leading to better power output and oil control. They also use tool steel wrist pins for added durability, and some part numbers offer upgrades to even stronger alloys like 9310 or Turbo Tuff/DLC for extreme applications. The unique fixturing Manley uses allows them to machine the skirt and ring grooves in one setup, ensuring the grooves are perfectly square to the piston skirt, which is vital for proper ring function under high stress.

This set includes eight pistons, each designed for a specific purpose in a performance engine build. Remember that these pistons are not CARB approved and cannot be shipped to California. For serious engine builds where reliability and performance are paramount, Manley pistons are a popular choice among professional engine builders and tuners.