Steve:
The 4.1 ratio rear end is rarer than the OD gearbox!! So keep on looking
for the OD.
My TR3A has the 4.1 with OD and it's great. It apparently came that way
from the factory (or at least the dealership!!!), but I have put in an
all-synchro 'box. Years ago I also ran a TR4 with 4.1, although without
the OD (see above!!). It was definitely not nearly as nice on the
highway!! Myself, I kinda like the TR4-6 'box + OD and would keep that
'box rather than do a 5-speed conversion. IMHO of course.
Dave Q.
> From Steve Sewell:
>
> Which to choose? I had to install my spare rear end in my Daily Driver 4A.
>Turns out it is a 4.1 ratio. After more than 60K with the 3.7 the 4.1 drives a
>lot different. 2nd gear used to pull hard, now 3rd where most of the
>acceleration is. The 4.1 is whining a little so I am going have new bearings
>and seals put in. Should I rebuild the 3.7 instead? Keep on the lookout for
>the elusive A type overdrive? Maybe even Herman's 5 speed conversion?<
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