33" tires and gears
Ok dont know much about the speedo gears but that is what your gonna have to do to recalibrate your speedometer to show the right speed, you can do a search on the speedo gear to find more info, or pm Indy he knows about them and could be more help
98 and up can be done with tuner, 97 under you change the gear in the trans. I saved this link from the last time this was discussed.
http://www.go.jeep-xj.info/HowtoSpeedoGears.htm
http://www.go.jeep-xj.info/HowtoSpeedoGears.htm
Alright so i popped the hood and I saw 3.2 for the gear ratio.Also something about a Chrysler 9.25 rear or near that.I will be getting some all terrains since I stay in the southern part of Guam.Oh yeah Guam is an island in the pacific if you don't know.If you watched Outdoor channel's Top Truck Challenge there is a competitor from here who did good.He's in the buggy class Joe Quichocho.
Nahhh if you go to my album the pics are bigger. It doesnt have any kind of lift, or leveling kit.
Alright so i popped the hood and I saw 3.2 for the gear ratio.Also something about a Chrysler 9.25 rear or near that.I will be getting some all terrains since I stay in the southern part of Guam.Oh yeah Guam is an island in the pacific if you don't know.If you watched Outdoor channel's Top Truck Challenge there is a competitor from here who did good.He's in the buggy class Joe Quichocho.
But I don't think Dodge Rams come with gears higher than 3:55's.
I'm not sure who's getting what gears for who after 8 pages, but I thought I'd include this handy gear ratio/rpm/tire chart.
http://www.jeep4x4center.com/jeep-ti...atio-chart.htm
Remember these rpms are caculated at a 65 mph, and you should subtract about 15% off the listed rpm at the given tires/gear block for overdrive...
As an example: a 33 (285/305) inch tire with 3:55 gears at 65 mph turns 2349 rpm X .85 =1996 rpm.
Another would be a 31 inch (245) tire with 3:55 gears at 65 mph turning 2501 rpm x .85 =2123 rpm
One wouldn't think that 126 rpm wouldn't make much of a difference, but given the aerodynamics of a taller truck, heavier tires..and the fact that the motor torque peaks around 2500...those that run "33" inch tires with 3:55 gears can appreciate why thier truck lacks power and constantly shifts out of OD on hilly roads.
Last edited by dsertdog56; Oct 14, 2010 at 09:58 PM.







