The Vevor 2X Cylinder Head set is designed for Chevy SBC 327/350/383 engines, including Corvette, Camaro, and Z06 models. CNC-machined for precision airflow and sealing, these 190cc aluminum heads deliver improved horsepower, fuel efficiency, and reduced emissions. Built from durable aluminum alloy with manganese bronze valve guides and hardened seats, they ensure long-lasting performance and heat dissipation. Fully assembled with valves, springs, seals, and locks, this ready-to-install upgrade restores smooth engine operation and reliability.