Does anyone have any info on what is a good gear ratio to use with 35" tires. Running M20 rear/ dana30 front diffs with chromoly axles on a CJ5. Stock gears are 3:56.
Also is it worth putting the funds into these diffs or should I just upgrade to d44's
Is this a DD, or trial only rig? What shape is the motor in...by that I mean is it stock or does it have any mods? What is your major complaint now? Too sluggish off the line?
Personally the 20 rear should be good to go w/alloy 1 piece shafts. Yeah 44's would be nice, but under 250 hp, and not beating on it in a rock climb should be fine. My 304 lived through He!! when stock, and upgrades were considered exotic back in the '80s.
Truthfullness alert. When I needed an new frame I lucked out on an '86, that has a 44 rear. I put 4.10s in it to got w/a 400hp 360. It's not finished, so nothing to report.
I've also learned that sometimes... when people don't agree with you .... its best to hold them down and kidney punch them till they agree with you
I run 33's with 4.56 gears, biggest the 30 will handle are 4.88 witch surprisingly shares the same pinion as 4.56. If you plan on attempting any sort of decent off roading you should stay with atleast 4.56-4.88, if street only you might be ok with 4.11 but to me that's a waste if your going to dig into the diff's
I'm running with 4.10's and 35's. I have a 304 and a t-177 (little bit deeper 1st then the 176) off road, it's manageable but a little more gear would be nice. that being said, 65 on the highway is not a problem and I'd have no concerns doing this every day. it's a very fine line dealing with 35's and no overdrive.
I was looking at 4.27's when I swapped out the 2.73's but could not find them at a decent price for my dana 30, and 4.56's were a not going to cut it for me on the highway. My Jeep does not see a trailer to get to the trail.
To keep everything in a "happy place" RPM wise, it's going to be either 4:1 t-case gears/ swap in a 5 speed and new 4.88's/ or find a t-18 with a DEEP first.