maybe its just the bigger pumps. all the trucks i have built have had lift pumps to keep the injector pumps supplied. can anyone else chime in to give me a answer as to the difference in applications
You don't need timing tools with the aaz. You can set the pump timing by pinning the pump while you set the mechanical timing. Advancing the timing by trial and error can be done fairly quickly and easily.As long as your fuel system doesn't have any leaks it shouldn't loose prime when sitting.