ShadeTreeMech
Member
- Joined
- January 13, 2008
- Messages
- 13
- Reaction score
- 0
- City, State
- AR
- Year, Model & Trim Level
- '91 XLT
I have a '91 XLT with a great stock body, but what I would consider as a weak drivetrain. At 4btswaps.com I've been exploring (pun intended) the possibility of putting a I-4 cummins into my truck without changing the whole driveline. Other than swapping out the A4LD for a 5 speed, and the engine for a diesel, I want to use stock components as much as possible.
I have a couple Explorer specific questions that no one on 4btswaps could answer very well.
1. How much engine weight can my front end tolerate?
2. Will my Ford 8.8 survive 270+ ft/lbs of torque?
3. What should I use for a 5 speed that can handle the Cummins?
4. I want the higher gear ratio differentials available in the SportTrac to better fit the lower RPM's of the Cummins. Is a gear swap or complete axle swap possible/advisable?
Why a Cummins for the venerable 4.0? I am looking at nearly 30 MPG after the swap. Right now I am getting 13 MPG, and hating every bit of it. My motor and tranny both have about 40K, having been replaced by a shop before I bought the truck. I am currently running 235/70's, so I might be losing 1-2 MPG there since my odometer wouldn't be reading quite right, but not THAT far off.
Thoughts?
I have a couple Explorer specific questions that no one on 4btswaps could answer very well.
1. How much engine weight can my front end tolerate?
2. Will my Ford 8.8 survive 270+ ft/lbs of torque?
3. What should I use for a 5 speed that can handle the Cummins?
4. I want the higher gear ratio differentials available in the SportTrac to better fit the lower RPM's of the Cummins. Is a gear swap or complete axle swap possible/advisable?
Why a Cummins for the venerable 4.0? I am looking at nearly 30 MPG after the swap. Right now I am getting 13 MPG, and hating every bit of it. My motor and tranny both have about 40K, having been replaced by a shop before I bought the truck. I am currently running 235/70's, so I might be losing 1-2 MPG there since my odometer wouldn't be reading quite right, but not THAT far off.
Thoughts?