An engine is a simple sense is only an air pump. The valves control when air can enter and exit the engine controlling volumetric efficiency of the engine and dynamic compression ratio. The camshaft with its cam lobe design controls when the valves will open on both intake and exhaust side. The head camshaft designer at The ZL1 Speed Shop has more than 20 years rear world experience designing and testing camshafts for many different applications from Rolex 24 hour Daytona Road Racing, Drag Racing, Marine, Off-Road, Tractor Pulling, Endurance Racing, Drift Racing, Street/Strip, to common hot rod muscle cars, whether it be a lower 300hp application or a 10,000hp Nitro car application. There are many different types of custom lobes available that vary in shape, size, and composition. Whether you need an docile smooth lobe, an aggressive fast lobe, or something in between, the ZL1 Speed Shop can help. We have helped many performance enthusiasts and racers improve their cars performance with our custom cam designs—some we have powered to be track champions with our state-of-the-art camshaft technology. We understand what different types of lobes do and what impact increasing lobe lift, duration, LSA, and/or center-line with have on your engine and your cars vacuum operated accessories. Contact the ZL1 Speed Shop for more information and to discuss your one of a kind camshaft design tailored exactly to your engine, car, and intended use!