(a) Standard 4 speed gearbox from 1978 Triumph Spitfire 1500 (single rail).
(b) Overdrive gearbox (j type) mounted to a single rail type gearbox.
Will the mainshaft parts from the standard gearbox (a), install onto the
longer mainshaft fitted to overdrive gearbox (b)?
The overdrive gearbox has just started jumping out of 3rd gear (suspect
broken circlip on mainshaft - but not yet stripped to check). The syncro on
3 rd and second are also a tad worn.
As both gearboxes look to be the same - crossed my mind to change all the
parts from my good and known 4 speed box mainshaft onto the longer mainshaft
of the o/drive box. Just wondered if this is possible?
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