2006 Grand Cherokee engine swap
Asked by GuruTKT9N Jul 09, 2018 at 11:22 AM about the 2006 Jeep Grand Cherokee Laredo
Question type: Maintenance & Repair
I have a 2006 grand cherokee with a 3.7 l v6 using oil a lot. Can a 4.0 l inline 6
be swapped into this vehicle. It has AT. What adapters, motor mounts or other
mods needed?What about ECM computer. Any suggestions would be
appreciated
4 Answers
Hornet_2497 answered 6 years ago
The short answer is "No". The 2004 model was the last year the factory installed the 4.0 liter six engine in the Grand Cherokee. The 2006 is a whole new Jeep and the 4.0 was discontinued and the 3.7 was it's six cylinder replacement. Even if someone could cobble it in, you would have a ECM nightmare making it run.
Thanks for the info. Was suspecting such. Are there any more robust engine combos for this year? Any that would be feasable?
Hornet_2497 answered 6 years ago
For the 2006 model year the other engine option was the 4.7 liter V-8 but again the problem would be the Engine Control Module. The current ECM for the 3.7 would not be compatible with the 4.7 engine. Best swap would be a new or rebuilt 3.7 engine. (They might have also used the 5.7 Hemi...same problem.)
