Here's what makes it complicated:
* Different Engine Families: The Dakota used various V6 and V8 engines over the years, with significant differences in displacement, design, and mounting. A 3.9L V6 from a 1990 won't simply swap into a 2000 model with a 3.9L V6. Even within the same displacement, internal components might differ considerably.
* Transmission Compatibility: Engine swaps often require matching the transmission. If you change the engine, you might need a new transmission as well.
* Wiring Harnesses and Computer Modules (ECUs): The engine's computer controls (and associated wiring) are unique to specific engine and year combinations. A simple engine swap is rarely just bolt-on; significant wiring and computer reprogramming may be needed.
* Mounting and Accessories: Engine mounts, accessory brackets, and even exhaust systems might differ significantly between years.
To determine engine interchangeability for specific Dakota years:
1. Identify the exact engine: You need the engine code (often found on a sticker on the engine itself). Knowing just the displacement (e.g., 3.9L) isn't enough.
2. Consult a repair manual: Factory service manuals for the specific Dakota years will outline engine specifications and potential compatibilities (though they rarely explicitly say "this engine swaps into that year").
3. Use online forums and resources: Sites dedicated to Dodge Dakota owners often have discussions regarding engine swaps. These are valuable, though you must verify information found there.
In short, while some minor parts might be interchangeable between similar engines across years, a complete engine swap is a complex undertaking. It requires extensive mechanical knowledge and usually involves far more than just dropping in a new engine.
