They also put OD 'boxes into Commer vans. I've yet to actually see it, but
there's one in my 1974 Commer AutoSleeper. It may take a while, but when I
do get my hands on it, I can look at it for you! The Commer 'box would have
a column-shift style top plate, but I understand that's fairly simple to
change.
Jon Arzt
Omaha, NE USA
----- Original Message -----
From: "Jan Eyerman" <jan.eyerman@usa.net>
To: "John Slade" <edalsj@igs.net>; "List Alpine" <alpines@autox.team.net>
Sent: Friday, May 25, 2001 10:49 AM
Subject: Re: [Overdrive Gearboxes]
> John,
>
> It sounds like a box from the Arrow/Hunter series of cars. None were sold
here
> with overdrive but several models (including the fastback Sunbeam Rapier)
were
> sold in England with an overdrive.
>
> One other possibility, the weird ratios indicate that it might be an
Iranian
> Paykan-some of the engines came into the US a few years ago and it is
possible
> that a few transmissions did also.
>
> Jan Eyerman
> 1959 Hillman Minx Series III
> 1973 Hillman Avenger (ex Plymouth Cricket)
>
>
>
> John Slade <edalsj@igs.net> wrote:
> I have recently obtained a Rootes overdrive gearbox whose origins I
> can't identify. It is a later, full synchro box, with a casting number
> 71981060 (my late Alpine boxes all have the same number without the 7).
> It has a fine spline on the input shaft, as compared to the coarse
> spline on my Alpine boxes. The adapter (part # 1981083) for the D-type
> overdrive is 3.75" long, with mounts, facing downward, cast into the
> adapter about half way back. There are horizontal ribs which would
> preclude a standard Alpine rear mount from being fitted. The gear ratios
> (shown approximately) are weird...1st 4.15; 2nd 2.3; 3rd 1.5; 4th 1;
> Reverse 3.75.
>
> I would appreciate any info about this set-up. Thanks in advance.
>
> John Slade
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