For those running a doubler set up or an Atlas 4, did you add any support for the heavier setup? Or are you just running the stock transmission mount? Thanks
Dual transfer case mount
- Thread starter Gollywomper
- Start date
I looked into this when installing my atlas 2 speed and the concensus on other forums seemed to be that unless you're racing or rockbouncing a single mounting point is sufficient. Some also claimed the the second support can do more harm than good.
My 2 speed is supported by a GR universal crossmember connected in the oem location on the trans.
The 2 speed isn’t much different than a stock unit or a Rubi case. As far as mounting goes. Maybe I’m overthinking it. I plan to add a small GM rubber transmission mount tied into my rear output bolts. Should still have plenty of allowed movement to not put additional stress on anything. I’m really just trying to relieve some of the stress on the AX5 housing output.
Guess I’m torn between adding and not. Lol. One minute I think I have a plan and the next I’m just as clueless as before. I keep looking at an atlas 4 speed for guidance, since my setup will be similar. They DO NOT really sell or recommend any specific mounts. I’m not too worried about rotational torque as I am ok with stock rubber mounts absorbing this. I also expect mount life to reflect the new expectations. My real question, is the tail shaft housing of an AX5 up to the task of having the weight and new torque applied to it?
I am installing a flipped Dana 300 behind a Ecobox doubler. Not much cheaper than a AA4spd. But will be lighter and a bit shorter while keeping stock speedometer.
the doubler is 20lbs. I have read the 300 is anywhere between 70-86lbs. Guess I could I could throw one in the scale. Lol. Seems like a lot of guys are running a mount like shown below. I will be using a rubber tranny mounted to the tail housing bolts, mounted directly under the tail shaft.
the doubler is 20lbs. I have read the 300 is anywhere between 70-86lbs. Guess I could I could throw one in the scale. Lol. Seems like a lot of guys are running a mount like shown below. I will be using a rubber tranny mounted to the tail housing bolts, mounted directly under the tail shaft.
Yeah we added a support to a buddy’s. I bought the support ring and built most of a trans crossmember for mine but never got around to installing it. I will at some point probably but I’ve beat the hell out of it without issue over the last two years.
Personally I'd would, and did, just use the stock mounting position. K.I.S.S
Thats really light. What is the length and low low ratio?
Thats really light. What is the length and low low ratio?
16-3/4” total length to center of ujoint.
i will have 2.72, 4.0, and 10.88.
i will have 2.72, 4.0, and 10.88.
I haven’t got a real accurate measurement of my 231 with SYE. But it looked close to 16.5? Maybe 16”. Didn’t try too hard. Even 3/4” longer should present any issues. My rear DL has plenty of room. But will check everything at full droop to verify. This doubler is not much cheaper than an Atlas 4, but being a couple inches shorter is very important.
Yes. The Dana 300 isn’t as strong as an atlas but with my 100hp I don’t think I will break it. With no power having a lot of gear choice will be great. I could have been a bit shorter with a bronco Dana 20. But support for them is lesser than the 300. As it is there is only one company selling 4-1 gears for the 300. Atlas is really just a better/simpler option if you can fit it. We just really wanted to retain stock low range then have a 4-1 as well. The 10-1 will get some use in the snow, not sure how much other use it will get, but it will be a fun bonus. Lol. We are doing 2 rigs with this set up. The gears are on back order till mid May so project is on hold till then. We have ordered or received everything thing else.
I can’t believe nobody else has started making another case yet. I heard Trailworthy Fab bought the Stak t case info. But they are only making the Hero case that is very expensive. A 2.0 and 5.0 geared 3 speed would be perfect.
I know this is an old thread, but for anyone else looking: my buddy tried this type of mount on his rock buggy. LQ9 —> TH400 —> Atlas 5:1, and in 1 season of wheeling the extra torque ripped off a motor mount. Factory mounts are 3-point for stability while still allowing flex. Adding a 4th mount over-constrains the drivetrain.
Agree, after more research I ran only stock mounts in stock locations. No issues while I still had that rig.
Similar threads
