Fw: [T3] T3 vs T4 auto

["Russ Wolfe" <russella@prairieinet.net>]

>
> Subject: Re: [T3] T3 vs T4 auto
>
>
> >
> >
> >
> >
> > > The T-4 automatic was the same transmission as the T-3,  just
different
> > > motor mounts.
> >
> > There are a few other differences. The T3 had a 3.67 final drive while
the
> > T4 had a 3.73 for the fasty and a 3.91 for the SB. There was also the
> speed
> > or gear (?) output to the brain of the T4. Plus the T4 has the larger T2
> > sized CVs as opposed to the T1 size that the T3 has.
> >
> >    The T3, T4 and early T2s were the same basic 003 auto section but the
> bus
> > had the monsterously heavy cast iron diff housing as opposed to the
light
> > alloy one of the cars. There were also some internal differences in the
> > clutch packs and springs. Without an overhaul manual I can't tell you
the
> > differences, but I've been told from reliable sources that the bus and
T4
> > had 1 more clutch disc. The 003 auto section was also shared with the
> Rabbit
> > and small Audis.
> >
> >    The larger 010 auto out of the later buses were shared with the
larger
> > Audis, like the 5000 and 5000s turbo. And again had a very heavy case.
> These
> > autos are gaining some popularity with the off road crowd and are
proving
> > themselves rather bullet proof.
> >
> >
> >
> > I'll be finding out this summer. I put a 2.7L T4 into my notch and a T4
> > auto.
> >
 I fogot about the CV joints, but that can be changed, by changing the final
 drive flanges. If you notice, by your figures, the T-3 has the final drive
 ratio, which says that it should be faster on top end. My book doesn't show
 the T-2 automatic. Too old. (1972)
 And parts are still available for them. I priced a rebuild kit for my T-3.
 $75 for the kit, plus $15 each for the clutch bands. Kit is supposed to
 contain all the gaskets and seals needed, plus all new clutches.

 Russ Wolfe
 russw@classicvw.org
 http://www.classicvw.org/



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