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Old 03-02-2012, 05:54 AM   #1
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Question 1980 CJ7 Axle Quest. (Post Search)

I am planning to build my '80 CJ7 into a mild trail ride. After some research, I'm leaning towards doing a SOA with YJ springs, and running 35s.
It has the 258 with four speed, and Dana 300.

My question is this:
Does anyone know if I can swap the high pinion carrier (from my 90 cherokee parts jeep) into the low pinion Dana 30, and get 30 spline Chrome Allow axles with the correct 5x5.5 bolt pattern?

Or is there a good doner vehicle with a Dana 44 that's 54.5 length (to convert to wide track) I can always get a Ford 9 and narrow it for the rear.

Thanks!

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2003 Wrangler TJ 4.0 Auto: Stock
1991 Cherokee Laredo 4.0 Auto:
31x10.50 STTs 4.5" Rusty's Coils and 3" Rear Full Packs; WJ Drop Pit man Arm; Iron Man Fixed LCAs, Adj. UCAs; Adj. Track Bar; 4:10s; Injectors, 63mm Throttle Body; Safari Snorkel
1980 CJ 7 258 4 Speed: 2" Homemade Lift, 31 BFG MTs
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Old 03-02-2012, 07:57 AM   #2
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Did you upgrade the cherokee to 30 spline axle shafts? If not then its going to take 27 spline shafts in that carrier. As for it fitting in the CJ housing, Not sure, but carriers are cheap to buy.

Grand wagoneer 44's might work but I think the front diff might be on the wrong side depending on the year.

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Old 03-02-2012, 04:09 PM   #3
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Dana 44's did come factory in some '86 CJ's but are kind of scarce. Not going to find one close from anything else. A scout 44 is a good option but is about 4" wider.
A amc 20 with 1 pc axles is comparable to a 44 in strength IMO.
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Old 03-03-2012, 06:45 AM   #4
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Thanks guys, that's what I think too. I found a ford 9 from an early bronco for 250; but it was 8 inches wider than mine, and for that I'd wait out to find a big nine from a truck and cut it down.
If I come across a 44 from a late model CJ, I'm jumping on it!

I also found a 44 from a wagoneer, but not sure of the width, and I don't know if a front can be narrowed.

I probably should keep the 30 as 27 spline for easy replacement parts
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2003 Wrangler TJ 4.0 Auto: Stock
1991 Cherokee Laredo 4.0 Auto:
31x10.50 STTs 4.5" Rusty's Coils and 3" Rear Full Packs; WJ Drop Pit man Arm; Iron Man Fixed LCAs, Adj. UCAs; Adj. Track Bar; 4:10s; Injectors, 63mm Throttle Body; Safari Snorkel
1980 CJ 7 258 4 Speed: 2" Homemade Lift, 31 BFG MTs
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Old 03-03-2012, 05:08 PM   #5
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If you go any wider than wt you will want to outboard your springs.

I've been considering the same for my cj. I added wheel spacers to my nt axles and going to build a set off 44's. I will be outboarding the springs.
I have a waggy 44 for the front and either a 44 or 9" in the rear. My width will be very close to a tj width...about 61.5" in the front.

With you running 35's the d30 is at it's max. IMO. You could chromo and be "safer" but for me it's the same money to go 44 and pickup a ton of stability.
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Old 03-04-2012, 10:59 AM   #6
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Quote:
Originally Posted by Dempsey View Post
If you go any wider than wt you will want to outboard your springs.

I've been considering the same for my cj. I added wheel spacers to my nt axles and going to build a set off 44's. I will be outboarding the springs.
I have a waggy 44 for the front and either a 44 or 9" in the rear. My width will be very close to a tj width...about 61.5" in the front.

With you running 35's the d30 is at it's max. IMO. You could chromo and be "safer" but for me it's the same money to go 44 and pickup a ton of stability.
Yea, that's the big question, solid axles and a locker are a must, but then I'm spending money in the AMC 20; and chromo axles in the 30 converted to HP, but they are still weak axles compared to most others.
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2003 Wrangler TJ 4.0 Auto: Stock
1991 Cherokee Laredo 4.0 Auto:
31x10.50 STTs 4.5" Rusty's Coils and 3" Rear Full Packs; WJ Drop Pit man Arm; Iron Man Fixed LCAs, Adj. UCAs; Adj. Track Bar; 4:10s; Injectors, 63mm Throttle Body; Safari Snorkel
1980 CJ 7 258 4 Speed: 2" Homemade Lift, 31 BFG MTs
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Old 03-04-2012, 04:36 PM   #7
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Yeah. I understand 35" tires are the size tire that you can go either way with.

Is your current gear ratio in the axles 3.54?
What kind of locker(s) you looking at?

Another option is to go for a set already setup or close to. Thats what I did for the axles under my cj currently.
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Old 03-04-2012, 08:33 PM   #8
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Correct me if I'm wrong but the Dana 300 is a passenger side output on the front.The only year waggy.s 44 with a P-side drop front was '76 to '79.You can run a Dana 300 flip kit and broaden your options on front ends.
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Old 03-04-2012, 09:17 PM   #9
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Correct me if I'm wrong but the Dana 300 is a passenger side output on the front.The only year waggy.s 44 with a P-side drop front was '76 to '79.You can run a Dana 300 flip kit and broaden your options on front ends.
Yep. You are correct. I've got 2 in my shop because they dont show up for sale everyday.
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Old 03-05-2012, 06:12 AM   #10
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Interesting; I hadn't heard of flipping the 300 before;
Dana 300 Adaptation and Clocking Ring
I could go ford 8.8 and Dana 30HP YJ up front, to get the new bolt pattern.
Lots of options.
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2003 Wrangler TJ 4.0 Auto: Stock
1991 Cherokee Laredo 4.0 Auto:
31x10.50 STTs 4.5" Rusty's Coils and 3" Rear Full Packs; WJ Drop Pit man Arm; Iron Man Fixed LCAs, Adj. UCAs; Adj. Track Bar; 4:10s; Injectors, 63mm Throttle Body; Safari Snorkel
1980 CJ 7 258 4 Speed: 2" Homemade Lift, 31 BFG MTs
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Old 03-05-2012, 06:21 AM   #11
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Quote:
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Interesting; I hadn't heard of flipping the 300 before;
Down East Offroad.com
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Old 03-05-2012, 07:44 AM   #12
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Quote:
Originally Posted by 03_TJ View Post
Interesting; I hadn't heard of flipping the 300 before;
Dana 300 Adaptation and Clocking Ring
I could go ford 8.8 and Dana 30HP YJ up front, to get the new bolt pattern.
Lots of options.
That is a sweet combo IMO. Especially since you can get 4.10 gears factory in both of them.

Quote:
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Thanks for posting the link. I had wondered how people were doing that.
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Old 03-06-2012, 06:15 AM   #13
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Yes, thank you for that link!

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2003 Wrangler TJ 4.0 Auto: Stock
1991 Cherokee Laredo 4.0 Auto:
31x10.50 STTs 4.5" Rusty's Coils and 3" Rear Full Packs; WJ Drop Pit man Arm; Iron Man Fixed LCAs, Adj. UCAs; Adj. Track Bar; 4:10s; Injectors, 63mm Throttle Body; Safari Snorkel
1980 CJ 7 258 4 Speed: 2" Homemade Lift, 31 BFG MTs
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