Does anyone know the specs to this engine as in length width and height? Because i have a 78 f250 with a 521 in it and for my first truck its a little impractical, my plan is that my brother and i are going to put a 5.9 cummins in it, but i thought i would weigh my options, i was wondering if a 6.6 would tuck under the hood like the 5.9 will, the 5.9 will fit just fine, i just think it would be cool to put a 6.6 in there if i could.

 

Try posting down in the general diesel section maybe? General Diesel Discussion - Ford Truck Enthusiasts Forums Might get more response down there, this forum section is for 09-up F150s. Welcome to FTE and good luck with your project.