dose anyone know anything about the 4BT engines specifically the fuel pump that is used and how much power has been made with these engines

 

The majority of the 4bt engines have a rotary style pump on them, however in the late 90's, something makes me think 97 but don't hold me to that, there was a p-pumped version of the engine. A Buddy of mine has a p-pumped 4bt in a 96 Chevy truck, it is twin charged capable of 115 lbs of boost and made 550 ft lbs of torque. However, when it was on the dyno it had a blown intake gasket and only built 65 lbs.

 

4btswaps.com is the best place to learn about these engines, capabilities, and cool swaps.