EDENMA@aol.com wrote:
>
> Will an overdrive transmission from a 69 MK III fit in the later spitfires?
> Mk 4, 1500, 74-78? ( Of course with the shorter dirve shaft)
>
> Greg:
>
> The input drive shaft splines are different on the newer single rail gearbox
> from the older three rail gearboxes. I think, if I recall correctly, the
> swap over year was '74. I fitted a late model gear box into a 73 Spitfire
> which originally was fitted with a three rail box. I got around this problem
> by using a later model clutch plate with my older pressure plate. You are
> going the other way which may be a problem because I seem to remember that
> the clutch plates are of different sizes (1/4" or 1/8"). It may not make a
> difference. You can do what I did, and just play with the different
> combinations on the garage floor until you get one that works. Mine has been
> working fine for the last 11 years.
>
> Best Regards,
>
> Mark
One other issue is the length of the drive shaft. The earlier trannies (Pre
MkIV) were shorter than the later ones and depending on what exactly you
are going to do, you might find that the drive shaft doesn't fit.
Joe
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