Bill asked:
> Is it possible to put GT6 gears in a 3 rail Spitfire transmission case?
> If
> so, is it a straight swap or are there modifications that need to be
> done?
>
Joe replied:
> Because the input shaft contains one of the critical gears, it has to be
> included. Actually, aside from the difference in ratios, there is very
> little difference in the GT6 3 rail and the MkIV Spit 3 rail gear boxes
> of the same vintage.
>
> So, you can use the gt6 box but will have to cut down the input shaft
> (disk which is longer) and use a different clutch that matches the 1" 10
> spline configuration of the GT6 input shaft.
Just to clarify Joe's reply ever so slightly, I do NOT believe this swap is
possible with the older three-rail, "no synchro on first" gearboxes. In those,
a "parallel" conversion could use a Vitesse 6 (1600 motor, HB gearbox) gearset,
etc.
--Andy Mace
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