OK you're in luck, the '91 has the all mechanical AOD trans so installing the 5.8 is as simple as buying a 28oz AOD flexplate for it, you cannot under any circumstances use the E4OD flexplate that is currently on the 5.8, the front-back offset is different and using it will immediately destroy the AOD transmission. With that done you then need to source a 5.8 PCM for a truck with a C6 auto(3-speed) or manual transmission, you cannot use the 5.8 PCM in the '90 because it will throw a mountain of codes without that E4OD trans connected, and moving that trans into the '91 is a big job since it will involve a lot of wiring.
Ok so its been awhile, but the motor i had before was busted so no go. I have just found a 1992 ford 5.8 windsor with transmission, transfer case and computer. It has the AOD transmission from what I am told already.
Davie J.
10-20-2015 12:46 PM
Oil Filter Problem
:-huhI have a similar swap in process: I am putting a '93 5.8 liter into my 1987 F250 XLT Lariat and I am having some problems. As I am setting the engine into place, the oil filter hits the cross member and will not allow the engine to set down. Even the "shorty" 4 inch filter will not fit. The motor mounts seem to fit great, but maybe there's a difference in mounts and maybe there are mounts that allow the engine to sit farther forward. I'm stuck until I get an idea on why it won't fit.https://www.ford-trucks.com/forums/i...2/confused.gif
