Originally Posted by floidoip
I do believe my van is geared 3:51. I do not care about getting anywhere fast......just safely. Thanks for your reply!
I wouldn't try with that gear ratio, you'll cook your transmission. If you can have it changed to a 4.10:1 or so. Even with these gears you will not be going fast up the hills. I would also add an additional transmission cooler and maybe an engine oil cooler. Also, I would install a transmission temperature gauge so you will know what is going on. Then you should be fine.
I just noticed your van is a 4X4. That makes changing the gear ratio more difficult. Still, I think you will have an overloaded Van with the 3.51 gears.