Here is a video of the old engine. Pretty sure it's a 366 but I've been wrong many times before

http://www.youtube.com/watch?v=nVGmr...3&feature=plcp

 

I don't recognize it. Where was the fuel pump? Left or right side? Mounted to the timing cover or sticking up out of the block? I think it was an earlier diesel, wasn't much you could do with them performance-wise.

About 72 or so they came out with the 66 series tractors, had a D/DT 312, 360, 414, 436 engines in them, they can put out some horsepower.