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Hola Scott
Since this is an subject that all may benifit from, I will type to
all.
Most likely your Imperial came with the standared Imperial 2.93 rear axle
ratio. During that era, the optional ratio was the 3.23:1 ratio. If
you have an Imperial that was ordered with the Sure-Grip the ratio would have
been with the 2.93 or the 3.23:1 ratio. The 9 1/4 size did not arrive
until 1967 and none of them have the torque brace welded to the axle housing as
your two piece drive shaft Imperial.
The Factory Service Manual ( FSM ) under section Three (3) shows the axle
ratios. I have only the 1963 and 1966 FSM's. For the 1966 FSM it
clearly shows the 3.23:1 for the NY'rs, but nuda for an Imperial with
towing. Some one with an 1965 FSM can fill in the foggy area there.
The Imperial Division did offer an aux cooler for the steering pump and
with the transmission on the 1965 Imperials. At least I will say that
I have seen them with my own two eyes.
Here in Colo it is OK to down shift the Torque-Flite Transmission manually
to "two" if one is having go problems while leaving Denver on west bound I-70,
since MM 260 to MM 254 is a little up-ward ( there are three lanes ). I
can stay with traffic with the 3.9 powered 4 x4 five speed 95 Dakota and the AS
on the same grade.
Uncle Rodger & Aunt Gabby
COS
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