http://www.teglerizer.com/triumphstuff/gt6/gt6jtype.htm
has a few comments directly related to your questions.
No the driveshaft will need to be even shorter than the
D type shaft. Shaft length? ..got me....Do you remember Mark?
Paul Tegler
ptegler@cablespeed.com
www.teglerizer.com
----- Original Message -----
From: <idhtfts@rogers.com>
To: <SPIT6CGT6@yahoogroups.com>; <triumph-gt6-enthusiast@yahoogroups.com>;
<spitfires@autox.team.net>
Sent: Sunday, January 02, 2005 1:21 AM
Subject: [SPIT6CGT6] Converting GT6 trans to J type overdrive.
>
> Hi everyone and happy New Year!
>
> Anyone have experience converting a 71 GT6 Mk3 4 speed to utilize a
> J-type overdrive?
>
> What internals have to be changed besides the main shaft?
> Any frame bodges required beside a new rear mount plate?
>
> I have a D-type shortened Gt6 drive shaft - is it the proper length for
> the J-type?
>
> Anything else make this a show stopper? I'm sure there are many details
> to be worked out but I have to make an overdrive purchase decision and
> the main gotchas are what I'm looking at now.
>
> -Maurice
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