I need to re gear my cj7 to spin the 33" swampers that I just put on. The stock 3.55's are not going to cut it. I am thinking either 4.10 or 4.56. It will mostly be a offroad rig but I would still like to be able to cruise around town with the top off during the summer. Any opinions?

3:55 to 4:10 isn't even worth messing with.

I just installed 4.88's with 35's made a big difference. I figured I could run the straight 6 at just under 3000 rpm on the highway to do 65. I think my engine would be much happier closer to 2500 rpms though. I also don't think 3.55 to 4.10s would be worth it.

Run the fawkers with stock gearing.. change as you feel appropriate. I ran 33's with 3.54's just fine but its a matter of preference.

456 on 33's is just about perfect for both offroad and around town.

I just installed 4.88's with 35's made a big difference. I figured I could run the straight 6 at just under 3000 rpm on the highway to do 65. I think my engine would be much happier closer to 2500 rpms though. I also don't think 3.55 to 4.10s would be worth it.

I run a TJ with 4.0L, 4:56 gears, and 33 inch tires at 2,700 RPM at 70 MPH.

I run a TJ with 4.0L, 4:56 gears, and 33 inch tires at 2,700 RPM at 70 MPH.

With what transmission?...

Use Google, find a gear claculator and figure out what you need to get it back to stock. Or geared a little lower than stock.

I would go with the 4.56 Gears. I have used them for 33's and 35's and they work great. If you plan on going bigger then 33's then think about 4.88

With what transmission?...

The AX-15

Use Google, find a gear claculator and figure out what you need to get it back to stock. Or geared a little lower than stock.

Here is one such chart:

http://www.4lo.com/calc/geartable.htm

However, you may find that the RPM doesn't apply to your vehicle.