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here is what i have. i have a 86 ranger 4x4 2.9L 5 speed. i have a chance to get a 96 4.0l complete w. all wires, ecm, ehaust everything for a really good deal included the auto tranny and t-case. (a deal thats almost too good to let pass) i have been wanting to drop a 4.0L in my truck for some time and i have been told the 91,92 are best but 91-94 is managable. so my question is how much different is the 96 4.0L is it worth while to do it? or should i just hold out and hope to find one closer to the early 90s in year model?
Yeah...that's my thinking is that whoever told you that was just a little scared of the OBD-II system. Either way, you've got to swap the computer and entire engine wiring harness to hook everything up. Anything that even remotely attaches to the engine will need to be swapped though. Not a bad deal to get everything from once source however, especially if you have unlimited access to the donor vehicle.
You'll have to find some way to use the later model steering console, which will probably require some serious modification or use of the later dash.
In addition to the above good points, there may be sensors that you will need to add to your older truck to make the newer ecu work, such as vehicle speed sensors, etc. For some reason, they seemed to change how they measured vehicle speed fairly often from year to year, so some of those types of things may come into play.
the engine is from an exploder and i would have 1 day acces to it. i dont think the interior parts would be included with the engine so that leaves out the dash, cluster. or stearing. the guy that has the exploder is into low riders and had choped it all up. and now is wanting to put a v8 or something in it. and said i could get the drive train thats in it minus axles for $350 and all wireing and ecm that goes directly to the engine.