Decided to start a new thread for cummins, even though this is a ford forum site. ill just post any more questions i have into here.

My question would be about the fuel pump. I just read a post that stated that just like everything else, the fuel pump for a 6BT is strictly mechanical and is mounted to the side of the block. Can anyone confirm this? is it false? When i do the swap into my 79 F3fiddy, i would like to keep the original fuel pumps, as that would make a few things simpler.

 

 

Yes the 12v Cummins does have a mechanical lift pump on the side of the block.
there are 2 different types though. The earlier VE pump engines use a pump similar to a carbed gas engine, with an output of 8-10 psi. The P7100 equipped engines have a higher pressure plunger style pump.
Either type can be deleted in favor of an electric pump, but the VE pump cannot handle input pressure much more than 10-12, while the P7100 is capable of withstanding upwards of 100 psi.

 

i believe they add the fuel systems to make up for cavitation in the pump inlet when turning up the fuel. Fast Fuel makes a good kit for both Cummins and powerstroke.