Re: [Amc-list] Eagle rear diff difaffembly

[Wrambler242@xxxxxxxxxxx]

Frank,
   Don't forget the gearing in that T5.
It's got a 4-1 first
IIRC the OD is about .8.

So I would think the 3:08 would be as steep a gear as one would want.
I run that geared trans with 3:31 and a 255/60/15.
So going to the smaller Eagle tires and 3:08 would be close.
In fact I believe my speedo gear was about correct to have been from a 3:08 geared Hornet.
I would not want a gear any steeper unless I built a 2.95 or 3.3? geared T5 with a .6  OD.



--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
2004 Grand Cherokee Laredo, 4.7L, Quadratrc II
" Chronic Pain Hurts"

 -------------- Original message ----------------------
From: Frank Swygert <farna@xxxxxxx>
> You have to pull the diff to take it apart. I don't think there's any way to do 
> it otherwise, and you'd be very cramped even if you could -- bet it would take 
> as long or longer than sliding the axles out and pulling the diff to a bench. 
> 
> 2.73 gears and a five speed? Fifth would be just about useless! My car has 3.55 
> gears and fourth (0.70 OD) is useless under 65-70 mph!! My Jeep Commanche w/five 
> speed had 3.08s. Only used fifth when on the interstate, no point anywhere else. 
> 3.31s would have been great! They were available in Eagles, but not common. 
> 3.08s should be. 3.08 was common for 80-81 models, 3.31 was only a high altitude 
> option. It went downhill from there -- 2.xx gears across the board in 82-83, 
> except the trailer towing option, which was 3.08. Four cylinder models all got 
> 3.54, whcih I don't think would be too steep for the five speed from my 
> experience. Your Eagle probably weighs about as much as my 63 Classic wagon. As 
> long as you're not planning on cruising past 80 mph 3.54 should be real good, 
> and mileage around town should even pick up as the engine isn't working as hard 
> as it is with the 2.73 gears. I don't have any TSMs past 83, but I beleive 
> gearing stayed the same as 82-83 models.  
> 
> ---------------------
> Date: Tue, 26 Feb 2008 18:27:46 -0700
> From: Ken Ames <ameskg@xxxxxxxxx>
> 
> Nasty clunks and jerking motion from the rear diff.
> Suspect the spider gears or such are losing a tooth/teeth. Going to take the
> cover off later tonight.
> Can I get these small gears out without taking the whole assembly out of the
> axle as the shop manual suggests? 
> Could be tough to get the various locking pins, etc. out while still in the 
> axle.
> 
> Maybe I'll just swap the whole axle. Withe 5 speed and the 2.73s that are in
> there now I feel I could get better results with 3.08s. Engine rpms seem too low
> when in 5th on the highway. They'd move from about a lugging 1600 to 1800 at 
> 60mph.
> 
> -- 
> Frank Swygert
> Publisher, "American Motors Cars" 
> Magazine (AMC)
> For all AMC enthusiasts
> http://farna.home.att.net/AMC.html
> (free download available!)
> 
> 
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