I have a 1991 international it has a 275hp L10 cummins, it has the old mechanical pump on it. does anyone have any tips or links on how to get some more fuel out of these things

 

As far as I know, there is some kind of "button" in the pump that can be changed. If I'm not mistaken it's some kind of fuel resriction fitting thing....the bigger "button" you go the more fuel you get. I know I saw one in a concrete mixer that was changed...talk about low end power!! Sorry that's all I know. Hope it helps.

 

the button is something that was tuned with a pt pump on a bench to get the fueling. the l10 i don't think had a pt fuel system..