In the case of the ’01-to-’10 Duramax and ’03-to-present Cummins, the heart of the common-rail system has been the Bosch CP3. ... Stroker Pump Ingredient 3: Suction Valves.

Engines have evolved to meet changing emissions standards. One innovation from Cummins to meet those standards was the mechanical injection P-Pump.

In its early years, the CP3 paired with the third-generation 24-valve 5.9-liter Cummins engine, which had variants that could push upwards of 305 horsepower and 555 pound-feet of torque. However ...

However, due to slightly higher efficiency right out of the box, the Duramax pump will flow 195 to 200 lph on a flow bench, while a Cummins pump will put out 180 to 185 lph. A stroker CP3 can flow ...

With the success of the P7100 injection pump in the 5.9L Cummins engine and beyond, custom P-pumps have started popping up. These modded P-pumps can increase the engine's cubic capacity and ...