the new motors are 6.0l. the last year ford offered a 6.9l was in 87. international still had a few up to 89 in the heavier trucks (i have seen it). think you may be looking in the wrong area for info. if you are looking for info on a 6.9l, they are twice as strong as a 7.3l idi. thicker walls, means less likelyhood of cracking, or cavatating. this is the number one reason for early PS as well as 7.3l IDI failures. i routinly remove 7.3l IDI upon failure to install the 6.9L. motor is cheaper (i wonder why??!!), and they will outlast a 7.3L by two fold. all this coming from a guy WITH a 7.3L idi, and a 93 with a 6.9L reviva motor.. /ubbthreads/images/graemlins/biggrin.gif
