So I have another question for you's. Is there is a difference in performance between a 1997 TJ and a 2001 TJ?? My buddy just bought a 2001 Wrangler Sport yesterday - 6cyl 5 speed. We took it for a test drive and it seems as if it has more giddy up than mine. The only difference I could see right off is that his Jeep has the muffler cut off and has a straight pipe in place. Would that make a difference in performance against mine with the big ole factory muffler??
2007 JK Wrangler Unlimited
Teraflex 2.5 coil kit
17x9 Mickey Thompson black classic II's
33x11.50 BFG Mud Terrains
If your have 3.07 gears with 33s and his has say 3.73 and 31s it is going to be a noticeable difference between the two.I have 3.07 with 33s and it is doggy compared to a friend of mine with 3.73 and 31s.The first time I worked on his and took it for a test drive afterward I could feel more power from his right off the bat.
You could be right on that! I have an automatic.Although the automatic should have being the first to be geared lower and frankly they should have never put 3.07 gears in either one but I guess even the smartest people in the world have a brain fart from time to time!!!
3.07's, 3.73's, a rare 3.55 ratio and 4.10's where available from the factory for a TJ D35
Since you have a 4.0, that most likely eliminates the 4.10's that came with the 4cyl, but was still option with the 4.0L if orders from the dealer with them. The 3.55's are just down right not that common.
So most likely you have 3.07's or 3.73's.
Another way to tell is to lift the rear end off the ground and mark the drive shaft or yoke. Spin the rear tire "1" complete rotation and count the time the drive shaft makes a rotation.
If it's basically 3 times....3.07's ....3 and 3/4 rotations and it's 3.73's, and so on.