>I recently replace my 3.89 diff with the 3.27 in my '70 GT6 with OD. I have
>found this to be an excellent replacement. The 3.27 diff are much more readily
>available. Often you can find a parts car at a very reasonable price.
I found the opposite to be true, the 3.89s are readily available, but the 3.27s
were pretty rare, I found my 3.27 diff at a yard in Georgia after many phone
calls. Also note that although most of the GT6 diffs have six spring hold down
studs, the very late '73s w/o OD have a 3.27 diff with four hold down studs and
a different spring and mounting plate. Very similar to a Spit, but with 3.27
gears. This what I had in mine originally, but I switched it to the earlier 6
stud type with a matching spring, the 4 stud 3.27 diffs are impossible to
find. It may be possible to put 3.27 gears in a Spit rear though???
>You should be able to find a junk yard diff for around $250, rebuilding will
>depend on the extent of the damage, but could be as much as $800.
The one I bought had bad carrier bearings, but the gears were good. If the
gears are shot in a used GT6 diff, it's almost worthless.
Mike G.
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