Re: Survey: who has 3.7 or 4.1 differentials

[Tony Rhodes <ARhodes@compuserve.com>]

Message text written by "Charlie"
>I forgot how to check.  Also, where on the axle would it be marked BTC ?<

The serial number on the differential will read the number.  It is in a pretty
obvious location from under the car., if you can see it.  In the edge of the
differential case at the junction with the rear cover.

You can test by rolling the car foreward in 4th gear for one full fan rotation.
Having marked the tire, you see if it rolled less than 4 turns (3.7) or just 
more
than 4 (4.1)

-Tony