tjkj2002
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- Joined
- Dec 17, 2006
- Messages
- 10,612
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Going to SFA it to run stock tires?3.55 is a perfect gear with these 30" tires. 6th is always used on the highway. 120km/h (says the speedo) @2500rpm. I do have to downshift for most hills, but that's pretty normal for a gas engine. I wouldn't want to lose top speed and economy with a lower axle ratio. Plus there's the carrier break to work around.
This rig may get a diesel engine when the V6 packs it in.... at which point 3.55 is pretty ideal.
The '87 XJ I looked at had the D44 rear... but I waited too long, and its now sold. Another option I've stumbled on is a small pattern 9.25" with 3.90 ratio.
In light of the wife not wanting serious mods in the near future, I may just rebuild the front with a Tru-trac, and/or maybe take a stab at chopping up a spare 8.25" for a bigger IFS diff. (ala JBA style)
I know some CRD guy's that have regeared to get back power and mpg's.4.56's for 32" tires,4.88's for 33" tires,and at least 5.13's for 35" tires in a KJ with any engine.Live where I do and 5.38's would be a much better choice for 35" tires.
