Dana 20 Swap Questions

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CurrenceSpeed
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Dana 20 Swap Questions

Post by CurrenceSpeed » Thu Oct 10, 2019 4:16 pm

I have a 79 Cherokee with the Quadra Trac in it, and through a guy at work I’ve been given a Dana 20 case. Has anyone done the swap and if so how did it work with the offset rear axle?
Thanks in advance!

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Cecil14
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Re: Dana 20 Swap Questions

Post by Cecil14 » Thu Oct 10, 2019 6:59 pm

You're going to need an expensive adapter and a complete rebuild of your trans to put a D20 in place of a QT. The adapters are different for each case, as is the tailshaft in the trans. Unfortunately, the tailshaft is the last piece to come out of the trans during disassembly.

Honestly, if you're going to go to the trouble and expense of swapping, there are way better options. What is your long term goal? Reliability? Fuel economy (go ahead and laugh)? Offroad capability?
1983 J-10 - 4.6L(MPFI)/CS130D/Hydroboost/NV3550/D300/44/44/3.54/Disc-Disc/32s/42 gallon 'burb tank

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Stuka
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Re: Dana 20 Swap Questions

Post by Stuka » Thu Oct 10, 2019 9:23 pm

Also, what did the D20 come out of? There are a few variations of it, including driver and passenger side drop.

But I agree with Cecil, there are better options. Although most of them require swapping the tail shaft.
1981 J10 AMC 258 with HEI and Weber 32/36 DGEV Carb, T176, NP208, D44/M23 with 4.56 gears and Detroit Locker, 6" lift, 33x12.50 Cooper STT's, BJ's Offroad Rear Dozer Bumper.
2017 JKU Rubicon Lifted and stuff
Pevious Jeeps: 1975 Cherokee, 2008 JK, 2005 KJ, 1989 XJ


rocklaurence
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Re: Dana 20 Swap Questions

Post by rocklaurence » Fri Oct 11, 2019 6:05 am

You'd be better off switching over to the TF727/AW4 and one of the newer cases. Also, centered rear axle and Driver drop front axle. You could buy a donor vehicle for less than $1000


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CurrenceSpeed
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Re: Dana 20 Swap Questions

Post by CurrenceSpeed » Fri Oct 11, 2019 8:16 pm

I appreciate all of your input and I believe the case came from a CJ5. And as for goals I’d like it to be more capeable off road as well with some street manners. After reading this and other research I think it’s a better idea to install the part time kit in the QuadraTrac case, given the fact it’s significantly cheaper and less work. Within the next few months I should have enough parts gathered to get the Jeep more trail ready. And again thanks for the input!

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Stuka
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Re: Dana 20 Swap Questions

Post by Stuka » Fri Oct 11, 2019 9:49 pm

If all you are wanting is the ability to use 2wd, than yeah. The part time kit is the way to go. But I would advise against getting the over-drive version.
1981 J10 AMC 258 with HEI and Weber 32/36 DGEV Carb, T176, NP208, D44/M23 with 4.56 gears and Detroit Locker, 6" lift, 33x12.50 Cooper STT's, BJ's Offroad Rear Dozer Bumper.
2017 JKU Rubicon Lifted and stuff
Pevious Jeeps: 1975 Cherokee, 2008 JK, 2005 KJ, 1989 XJ

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fulsizjeep
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Re: Dana 20 Swap Questions

Post by fulsizjeep » Sat Oct 12, 2019 4:45 am

Is there something wrong with your QuadraTrac?
Sent from my IBM 5150 using TN5250 emulation.

Flint Boardman ~ http://jubileejeeps.org
Embracing the Borg Warner QuadraTrac since 1980 http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s, a few Evil Twin mods, http://eviltwinfab.com and a few TT's Fabworks mods, http://www.ttsfabworks.com
76 401 Wag, 77 401 Wag, 77 401 J20


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CurrenceSpeed
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Re: Dana 20 Swap Questions

Post by CurrenceSpeed » Sat Oct 12, 2019 8:51 am

fulsizjeep wrote:
Sat Oct 12, 2019 4:45 am
Is there something wrong with your QuadraTrac?
Nothing is wrong with the case and it’s operation. I just want to eliminate the weak points that I know of. In my opinion the clutches in the case.

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