This 178/208 combo brings together the camshaft, heavy-duty pushrods, 103 lb valve springs and tappets for 1998.5–2018 24-valve Cummins engines. The grind is aimed at low-RPM response; installation still requires the clearance checks and break-in procedure below.
The 24-valve 188/220 combo includes the camshaft, heavy-duty pushrods, 103 lb valve springs and tappets. For a VP44 truck, our application guidance points to the 24-valve 178/208 combo; read the turbo and clearance notes below before choosing.
The steel 188/220 cam is listed for drag-strip and stock-class pulling applications. It requires at least two bushings in the cam tunnel, plus the piston-to-valve clearance checks detailed below.
Our 188/220 cast cam is intended for daily-driver and light-competition Cummins builds, with a listed operating range of 1,700–4,500 RPM. Check the piston-to-valve clearance requirements below before choosing this grind.
