wheeler

not only a great tom petty song, but i need to know what the powerband for the 4.0 HO is. im needing to regear. im thinking either 4.10 4.56 or 4.88. ive got hte 4.0 with the ax-15 tranny and np231 transfer case. i will be towing so a little more power would be nice but i wont be towing often, but when i tow its long distances...

oh and im running 33's

thanks'

colton

89Laredo

4600rpm... lol

4.56s should be fine, you want around 22-2500 rpm at highway speeds.
AX15s final drive ratio is .04 (.75 AW4, .79 AX15) higher than the AW4, I remember looking up 33s and gears for the AW4 and it was 4.56. They will work fine and there would be little to no difference between .75 and .79.

Donnie_K

I'd stick with 4.10's.

we've got peak torque at a little over 2000 rpms. 4.10's with the 5 speed on 33's would put you at 2144 rpms in fifth gear at 65 mph. if it were the automatic I'd say 4.56's

SeriousOffroad

With manual tranny, 4.10 is typaically the prefered gear set. But don't just go by others opinions, or mine. Use the following to select your gear ratio.

Gear Ratio Calculator

98jeepsrt6

I heard a few bad things about xjs and towing, there was a thread going about it. Ill see if i can find it.. What are you towing?

JhammXJ

I have 4.56 with 33's and auto trans. Its almost perfect.

wheeler

towing a drift boat someday sooner then later. ive spent countless hours on
http://www.grimmjeeper.com/gears.html and i really like it because i can compair 2 side by side. i ruled out the 4.88's LOL but im still stuck between the 4.10 and the 4.56. why cant there be a 4.33?!