If you had 3-4 thousand for drivetrain in CJ5 - JeepForum.com
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post #1 of 5 Old 09-20-2015, 02:10 PM Thread Starter
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1981 CJ5 
Join Date: Sep 2015
Location: Lake Geneva
Posts: 27
If you had 3-4 thousand for drivetrain in CJ5

Here is the deal, I picked up a '81 CJ5 with the intent to rebuild it as a capable off road rig. Here is what I am working with:

4.2l 6 cylinder
SR4 four speed
300 transfer case
Dana 30 front
AMC 20 rear (shot)
Spring over with 36" tires.

I love the big tires and the stance it currently has and would like to keep it close in size, but maybe go a bit wider.

If you had 3-4 grand to build a reliable rig what would you do? I would like specifics if possible. Axles, tcase, tranny, springs?

I am capable of doing welding, cutting, fab, and most of the skills required. Not at the level of you folks, but I get by.

Thanks for your input.

Wisconsinite is offline  
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post #2 of 5 Old 09-20-2015, 04:39 PM
In the Lab
1978 CJ5 
Join Date: Jun 2011
Location: Puyallup
Posts: 2,256
Just do it like mine. Specifics can be found in my profile


1978 CJ5 to CJ6 - Build in progress......

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post #3 of 5 Old 09-20-2015, 08:57 PM
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1980 CJ7 
Join Date: Jul 2015
Location: Caracas
Posts: 104
reliable + 36" tires + wider = v8 + 1 ton axles.. dont reinvent the wheel, its more than proved already for a long time

the ONLY thing i keep of your setup is the transfer case (DANA 300 very good transfer)
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post #4 of 5 Old 09-21-2015, 04:24 AM
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1985 CJ7 
Join Date: Jun 2008
Location: Chicago area
Posts: 3,549
That depends on what you want the Joop to do?
You say capable off road you live in Wis so what conditions will you be driving in?
Sand, mud, rocks
gmakra is offline  
post #5 of 5 Old 09-21-2015, 06:39 AM
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Join Date: Oct 2006
Location: Clarksburg WV
Posts: 201
3-4 k to spend.
Lets assume the body is in decent shape and it runs and shifts good, with a good clutch.
Rebuild the dana 20, add a limited slip differential, one piece axles, and about 4.11 gears.
Re-gear the front to 4.11 but leave the differential open.
Go completely thru the drive train, replace all u-joints with heavy duty spicer blue caps.
Add a 8,000 winch, 2.5" lift and 33" tires.
Budget spent.
sireland67 is offline  

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