Well after my Mountaineer 5.0 has been sitting this last time for 10 months I've decided what will happen next. Ultimately the drivetrain will end up in my 1999 Ranger/F100 project with the Holley Terminator X system and the 5.0 totally rebuilt or exchanged for a big outfit reman type engine but for now it will stay in the MM until I can find an early '80s 5.0 to swap it out with.
I went through a lot with the breakdown then attempted to repair it and the end result was 7 burnt coils on the left bank. It is a problem with the PCM or main engine harness or both. I will have to strip the top of the engine off of it to diagnose. If I'm going to do that and let me say really quick that yes, the 1997 5.0 ignition system with the waste spark stuff is good but I'm tired of it and spent many dollars trying to fix this truck.
I have a 1989 AOD which is just a little bit shorter than the 4R70W, which may end up in the Ranger at some point. I have a 1984 Mustang 4bbl intake and a new Holley 600 with VS and a Ford kick down. I also need to go to the local auto parts store ang get a 1977 Mustang V-8 Ford Duraspark distributor, hot box and big dizzy cap. I will have to change the ends on my new $85- Motorcraft wire set. I've had good luck using the Accel Super Stock coil with these Ford components and the only other necessary thing to do is use the distributor gear off of the '97 camshaft position sensor. Install a Carter inline frame mounted fuel pump should get everything going.
Yes, going backwards and simplifying a bit but also more Highway repairable, not to mention repair parts are at Most AutoZone Parts Stores.
I think that my 15 YO grandson will be able to work on this too...
Added 1 hour later.
Drive shaft flange spacers
I will need 4 m12x50 for 3 stacked plates.