It's thought that a P-pumped 24-valve is the ultimate Cummins engine ... with the raw fueling capability of the Bosch P7100 injection pump. While not everyone is looking to build a twin-turbo ...

Lift pumps are relatively inexpensive, but when they fail on a 24-valve Cummins, it often takes out the VP44 injection pump at the same time. These injection pumps cost more than $2,000 ...