quadra-trac to dana 300, what do i need? - JeepForum.com

 
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post #1 of 10 Old 08-17-2012, 07:17 AM Thread Starter
skmonster4x4
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1976 CJ7 
 
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quadra-trac to dana 300, what do i need?

i have a 76 cj 7 with an amc 304, th400 trans and the quadra trac transfer case (borg warner 1339) i want swap to a dana 300 t case and im wondering what i need to adapt the 300 to the th400?

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post #2 of 10 Old 08-17-2012, 07:29 AM
243
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You would be better off finding a rolling chassis and swapping everything over, the QT has a drivers side drop front axle and and offset rear axle.

What do you not like about the QT?

1978 Cherokee, TBI 360/T400/QT...6.0/6L80/NP241C in the works...
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post #3 of 10 Old 08-17-2012, 07:38 AM Thread Starter
skmonster4x4
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no its a passenger side drop and i already have a set of dana 44s, all i need is a tcase
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post #4 of 10 Old 08-17-2012, 07:47 AM
CSP
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You need an adaptor sold by either Novak Enterprises or Advance Adapters. The tailhousing and output shaft of the transmission will be replaced. New driveshafts will most likely be necessary as well.

243, no CJ ever left the factory with a drivers drop front axle. QT uses the same Dana 30 as any other CJ.
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post #5 of 10 Old 08-17-2012, 08:18 AM Thread Starter
skmonster4x4
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are there any other tcase options that will bolt up the th400 as is?
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post #6 of 10 Old 08-17-2012, 08:21 AM
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Quote:
Originally Posted by skmonster4x4
are there any other tcase options that will bolt up the th400 as is?
Nope.

1957 WILLYS pickup,
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7
1989 YJ the CJ to YJ.
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post #7 of 10 Old 08-17-2012, 08:39 AM
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Quote:
Originally Posted by skmonster4x4 View Post
no its a passenger side drop and i already have a set of dana 44s, all i need is a tcase
Quote:
Originally Posted by CSP View Post
You need an adaptor sold by either Novak Enterprises or Advance Adapters. The tailhousing and output shaft of the transmission will be replaced. New driveshafts will most likely be necessary as well.

243, no CJ ever left the factory with a drivers drop front axle. QT uses the same Dana 30 as any other CJ.
I got the dumbA$$ this morning, I was thinking about Wranglers

1978 Cherokee, TBI 360/T400/QT...6.0/6L80/NP241C in the works...
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post #8 of 10 Old 08-17-2012, 08:52 AM
kickingprop
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instead of adapting the TH400 to the D300, why not try and find a TF999/727 from an 80's CJ that would already be adapted to the D300? Do you already have the 300? if not you could probably just buy the tranny/tcase together in a set cheaper than you could find a D300 and buy the adapter.

1985 CJ7 Project
Phase One : 5.3L Vortec/4L60E, Moser axles for AMC20, Twin Stick'd Dana300 - Completed
Phase Two: Bedliner, Rollcage, Seats, BESRK Rear Bumper w/ tire swing, Soft Top, and a few other goodies - Mostly Complete
Phase Three: Waggy 44 front, Scout D44 Rear, 4.56's, ARB's (F/R) SOA with YJ Springs, 35x12.50x15 BFG MT - Not Even Close to beginning

Also a mostly rust-free 1970 Scout 800A That I'll get to start working on someday...

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post #9 of 10 Old 08-17-2012, 09:41 AM
CSP
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Nothing bolts up to a TH400 with the Qtrac case other than another Qtrac case. The bolt pattern and output shaft spline count is unique only to that BW-1339 Qtrac transfer case.
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post #10 of 10 Old 08-17-2012, 11:39 AM
bigredisb
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I just did the swap and it really inst bad at all.
As the guys said you will need a centered rear axle (which you have)
The TH400 used in front of the Q Trac has a 10 spline output shaft that sticks out about a foot from the back of the trans so nothing bolts up to it. The bummer of the swap if you could call it that is that the TH400 has to be completely gutted to swap tail shafts and is a good time to throw clutches and seals into it.

With the novak adapter my trans mount holes in my q trac cross member bolted right up.

You will then need to get front and rear driveshaftís made. I have a spare Curtis Tatton non CV style rear with 1310 spicers in it that should fit if you do the swap that I would sell real cheap. I only had about 25 miles on it.

I have a lot of this documented in my build thread as well.

1979 CJ7 aka "Christine" Build Thread: http://www.jeepforum.com/forum/f8/bi...build-1025854/

2013 Rubicon Unlimited build thread:http://www.jeepforum.com/forum/f96/b.../#post14700472
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