I have the 6.9l in my turck as the sig says but I was wondering if anyone knew anything about the 7.8l ford diesel.... I know absolutely nothing except that it is in a 1989 L-8000 dump truck with a 5 speed (zf5???). I'm tring to figure out if it was any good, things to look out for, etc. thats for ANY info you guys can supply The search pulled up about all of 6 threads...