Here's my setup:
2006 Jeep Wrangler SE
4.0L Engine
42RLE Automatic Transmission
Dana 30 Rear Axle with 3.73 gears
Dana M35 Front Axle with ??? gears (I assume it would be the same 3.73 gears)
4.25" Zone Offroad Combo Lift
33x12.50R15 BFG All Terrain Tires
I got the axle information from a website I found during some research on this website.
Here's the link...
I haven't checked the axles for myself, but I feel confident that the info I gather from that site is correct since everything else was pretty much spot on.
My question is this. Should I upgrade gears? I've read some where people have my same setup, and they're fine. Others say upgrade to 4.56 gears. My Jeep actually accelerates fine around town when I'm only on the road for 10-15 minutes at a time. The "trouble" I notice is when I travel out of town on the highway. It struggles to get up to 65-70 mph when compared to it's stock setup. Uphill climbs bog it down as well. It'll get to those speeds, but to get it there requires the RPMs to be 2500-3000. It'll eventually drop into overdrive when the highway flattens out (RPMs below 2000), but I'm afraid I'm going to burn up my transmission if I continue down this path with it popping in/out of OD. I have the OD switch. Should I just turn it off? Is overdrive a "5th" gear? Or is it the 4th?
I've done the upgrade calculation:
(33" new tire / 30" old tire) * 3.73 upgrade gear ratio = 4.10 new gear ratio
2006 Jeep Wrangler SE
4.0L Engine
42RLE Automatic Transmission
Dana 30 Rear Axle with 3.73 gears
Dana M35 Front Axle with ??? gears (I assume it would be the same 3.73 gears)
4.25" Zone Offroad Combo Lift
33x12.50R15 BFG All Terrain Tires
I got the axle information from a website I found during some research on this website.
Here's the link...
I haven't checked the axles for myself, but I feel confident that the info I gather from that site is correct since everything else was pretty much spot on.
My question is this. Should I upgrade gears? I've read some where people have my same setup, and they're fine. Others say upgrade to 4.56 gears. My Jeep actually accelerates fine around town when I'm only on the road for 10-15 minutes at a time. The "trouble" I notice is when I travel out of town on the highway. It struggles to get up to 65-70 mph when compared to it's stock setup. Uphill climbs bog it down as well. It'll get to those speeds, but to get it there requires the RPMs to be 2500-3000. It'll eventually drop into overdrive when the highway flattens out (RPMs below 2000), but I'm afraid I'm going to burn up my transmission if I continue down this path with it popping in/out of OD. I have the OD switch. Should I just turn it off? Is overdrive a "5th" gear? Or is it the 4th?
I've done the upgrade calculation:
(33" new tire / 30" old tire) * 3.73 upgrade gear ratio = 4.10 new gear ratio