UMDSmith said:
FLA5.0, that is my big issue is the ecu. If I can figure out a way to read the code into my computer, I could easily reprogram it once I figured it out (almost having a comp sci degree SHOULD pay off in some way right??). Aside from that though, that was my main issue and possible changeover to carb. With a carbed setup, it would definatly be simple, but I would rather stay with the efi personally.
I talked to a friend of mine today that has done it. He said he used a 93 cobra upper plenum on a GT-40 style 5.8 lower, (Ford Racing sells these - $$$). The 5.0 accessory drive can be used with a longer belt I'm told but you may need to modify it a bit and use a crank spacer.
I read that you can buy a mounting plate from Ford Racing that will allow you to use your stock power steering pump and a/c compressor.
If your putting it in your 89 you won't need to, but if it's destined for a pre-86 or a 86-93 non-V8, you will need a double hump crossmember and all years will require a set of headers that will clear the steering shaft.
But nobody says anything about the ECU...I'm assuming that "almost a direct bolt-in replacement" means that you can hook up all your sensors and go, but my thinking is that with more cubes, torque, and horses you will need more air, fuel, and spark. It makes sense to me that bigger injectors, fuel rail, MAF, TB, EGR spacer, fuel pump and most likely aftermarket dist would be in order. However I'm still learning the ropes of computer-managed engine systems myself and I just don't know if the stock setup would work or not.
Sorry, but at least this will bump you up and maybe someone with more knowledge on this topic will pick it up...keep us posted!