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post #1 of (permalink) Old 06-01-2002, 07:30 PM
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Scrambler rear axle upgrade, opinions?

Here I go, looking @ upgrading the ol' rear AMC 20 axle in my '81 Scrambler. With 150K on it, do you think it is worth going to one piece axles, lower gears (stock is 2.72!), & general axle rebuild; OR, go find a 44? I'm looking for cost information of rebuilding the 20 vs replacing it with something else.
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post #2 of (permalink) Old 06-01-2002, 07:44 PM
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Re: Scrambler rear axle upgrade, opinions?

If i didnt want to be wider i would have just beefed up the 20. New guts, axles and a truss and your good to go. Oh yeh dont forget to get the tubes stiched welded. But if you find a 44 with everything you want already and it doesnt need to be rebearinged then the 44 probably will be the cheap route.
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post #3 of (permalink) Old 06-01-2002, 08:34 PM
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post #4 of (permalink) Old 06-01-2002, 11:55 PM
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Re: Scrambler rear axle upgrade, opinions?

A rear 44 from a 72-73 Commando has the right width and spring perches, plus 11" brakes. Most of them were 3.73 also. If you decide to go that route, post a mssg on the Jeepster board, I know there are a few guys over there who have some extras, including 1 giving away a whole rig!
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post #5 of (permalink) Old 06-02-2002, 06:13 AM
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Re: Scrambler rear axle upgrade, opinions?

I have an 85 CJ8 with a stock rear axle. What would be the cheapest and easiest way for me to upgrade my rear axlw to a Dana 44? Thanks.
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post #6 of (permalink) Old 06-09-2002, 09:47 AM
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Re: Scrambler rear axle upgrade, opinions?

Duane D, go find a Scout rear axle with the same ratio. They are only 2" wider per side (not even noticeable), have the same bolt pattern, the pinion yoke is 1/4" different (no need to use another driveshaft), and all you'll have to do it move the spring perches. I've done a few for friends and it's the easiest upgrade you can do. They are plentiful up here, like $100 each, and it'll save you the $$$ from trying to upgrade the AMC 20. However, if you have a lot of $$$ into the AMC 20, keep it, as it's comparable to the D44 when modified (1 piece axles).

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I'd ditch both axles for something better. By the time you spend the $$$ on regearing and the 1 piece axles, you could have swapped in something beefier. I swapped in a pair of Scout axles with 4.10 gears in them. The front takes a little work, but it's worth it. You could also find a D30 with better gearing (3.54's are VERY common, I have 4 or 5 of them laying around) and a 3.54'd D44 is also pretty common.
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post #7 of (permalink) Old 06-09-2002, 12:04 PM
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Re: Scrambler rear axle upgrade, opinions?

It ain't the cheapest route but it is good...
Shortened 31 spline Ford 9" rear and shortened Dana 44 front. I just did it it cost me around $2000. including lockers and rear disc brakes. My friend Tom is a 9" Axle guru and has figured out how to cut and respline axles! for me this upgrade made sense and with 4:88 gears I can really crawl....

Before this upgrade I had the Mosier solid rear axles 3:73 gears and Lock-Rites F/R.
post #8 of (permalink) Old 06-09-2002, 01:53 PM
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Re: Scrambler rear axle upgrade, opinions?

The real question here is...........what are you doing with this jeep? Street machine? Occasional wheeler. ARCA compatition? This would really tell what options would be best for you. If it's a mild trail rig, then go with 1 pc and gears or a scout 44.
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post #9 of (permalink) Old 06-09-2002, 04:44 PM
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Re: Scrambler rear axle upgrade, opinions?

I found a Commando D44 with the gears I was looking for complete for alot less money than building up the 20. So I think I'll go that route rather than getting 1-piece axles, gears, install kit & labor expense to install of all that in my AMC 20.
post #10 of (permalink) Old 06-09-2002, 11:06 PM
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Re: Scrambler rear axle upgrade, opinions?

If the Commando donor has the D30 front, it'll bolt in also. Just swap your stuff over (knuckles out)for the disc brakes and then both axles will have the same gearing.
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