It is maybe true tha the GT6 gearbox is stronger then the Spitfire (for
example the lay shaft has roller bearings not just 'brass' bushings, but
I don't think it will just bolt in place.
Number 1. The starter on the GT6 engine is mounted on the right side (as
it is in the TR6). I have a aftermarket manifold on my '69 Spit. 4-2-1
and I don't think there is enough room to fit a starter next to it.
Number 2. If you use a Spitfire bellhousing and a GT6 tranny it might
work - read: work required to modify the bellhousing?? Will have to
modify input shaft and/or pilot bushing. Remember, its easier to modify
a aluminum bellhousing from and early Spitfire/Hearald and also much lighter.
Number 3. I think the gear ratio's are different but should work.
Number 4. If you have a stock Spit motor the stock Spit tranny will work
well. The GT6 trannies are getting harder to come by. The GT6 with more
HP had a bad habit of making their life short.
As to the TR 6 tranny, I know of a GT6 using one no problem other than if
try to put it in thge Spit check Number 1 above. If you want to use it
in a GT6 you will have to use the rear engine plate for the TR6 and make
a new pilot bushing.
I hope this help.
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