gear ratio change.
01-06-2013, 08:59 AM
#5
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Year: 92
Model: Cherokee
Engine: 4.0
Originally Posted by Bob98Classic
With lower gears on the highway, your RPMs go up, use a little more fuel.
When towing, more RPMs is an advantage, less stress on your engine, & trans.
When towing, more RPMs is an advantage, less stress on your engine, & trans.
Last edited by N20jeep; 01-06-2013 at 09:02 AM.
01-06-2013, 10:38 AM
#6
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Originally Posted by N20jeep
Higher rpms don't always mean more fuel used. Cruising at higher rpms after lower gearing can put you in a better position in the powerband at highway speeds, requiring less throttle input to maintain speed. And less throttle input will translate to shorter injector pulsewidth... so better mpg.
01-06-2013, 10:45 AM
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Year: 92
Model: Cherokee
Engine: 4.0
Originally Posted by 97xjCrow
Thats what i thought. Lol what should i upgrade to? Possibly going to be running 32s or 33s gonna be a daily driver but still want some decent pulling power off of the beaten path
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01-06-2013, 10:53 AM
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Year: 2000
Model: Cherokee
Engine: 4.6L stroker
The turdy five isnt worth re gearing. 33s on a d35 is just whack. 3.55 is fine for stock. Really only need to regear when running bigger tires. Just lookup jeep cherokee gear chart for specific guidelines for tires size
01-06-2013, 11:51 AM
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Originally Posted by N20jeep
Light wheeling, the d35 and 33's should be alright
01-06-2013, 11:55 AM
#12
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Year: 2001
Model: Cherokee
Engine: I-6
3.73s are not worth it time and money.I recently bought an 8.8 with the gear I wanted (4.10s for my future swap to 33s ) I will be swapping it in soon. I rebuilt the 35 in my jeep last year and it was ok but its leaking at the tubes and diff. I have an issue with pass. side axle seal, 2 seals in 1600 miles is enough. Getting a swap kit from Seriuosoffroad and its fixing to get 8.8 under it.
01-06-2013, 01:41 PM
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Year: 1987 MJ, 1998 XJ, 1973 J2000, 89 waggy
Model: Comanche (MJ)
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you'd be alright,
but going from 3.55's to 3.73's for a 33" tire is only a little gain for the $$ your going to pay for gears and install kits.
you're prolly looking at spending around $600 at the very least to do it correctly. (front and rear axles)
if the rear axle being too weak for what your doing is what your worried about then i would just save yourself the money from the gear swap and find a used Chrysler 8.25 from another XJ (only $100 ish depending on where you live and how popular they are)
