re: Gear Sets

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Definitely higher than 2.87 (lower numerically) require a different
carrier than 2.87-5.13 in the AMC 20 according to Jeep sites. Note that
factory gears over 4.10 had another carrier. The aftermarket 4.56-5.13
gears fit the common carrier, which is often called a "3 series carrier"
because most factory gears that fit it are "3.xx" ratio. The aftermarket
companies usually list 3.31 as the highest gear (lowest numerically) for
the common carrier, but that's due to no 2.87 being used in Jeeps. I
know from experience that the 2.87 uses the same carrier. The small
carrier starts at 2.73 (nothing available for the AMC 20 between 2.73
and 2.87, factory or aftermarket, that I'm aware of) and goes down to a
2.56 IIRC. I believe that was the highest gear available for the AMC 20.


This link will help: http://www.off-road.com/jeep/tech/axle/amc20.html

The AMC 15 is a whole 'nother can of worms! It's close to the same as
far as factory gears. I believe the common or "3 series" carrier runs
from 2.56-4.10, with a special carrier for the rather rare 2.53 gears
used a couple years, and another for steeper than 4.10/4.11 -- from the
factory. Aftermarket companies have 4.56 and 4.88 gears that fit the
factory carriers. At least I could find no evidence that another carrier
was needed for aftermarket lower than 4.10 gears.



On March 8, 2006 Armand Eshleman wrote:

> " Andrew I will certainly let you know if I happen across finding
which
> gearsets fit in
> which carriers, I think Randy Guynn or some one had something about
this a
> while ago."
>

Frank Swygert
farna@xxxxxxx