MGA NON SYNCRO GEARBOX INTO 1967 MGB GT NON SYNCRO

[andrew tolley]

hi guys can someone in the know answer the following question, will a late mga non syncro gearbox fit a 1967 mgb gt non syncro car?, if not what parts would i need to change to make it fit if possible?
please help.
andy.

[MG Mark]

I went down the opposite route a few years ago of converting my MGA to take an early non-synchro MGB overdrive gearbox to my MGA, but reverse engineering to fit an MGA gearbox to an MGB would need at least to do the following:

1) An MGA engine backplate as the starter aperture/holes are in the different places.
2) Matching up the clutch to the MGB flywheel; depending upon the spline count, you may need an MGA clutch or an MGB one; if you need an MGA clutch, you will need to machine the flywheel for 2 locating pegs rather than the 3 that the MGB has.
3) An MGA slave cylinder pushrod.
4) Shorten the gear change remote assembly by around 40mm, or the gear lever will end up somewhere behind your left elbow
5) Make up from scratch a rear mount for the gearbox - it is totally different from the MGB arrangement, with 2 forked prongs and one through bolt.
6) A custom-made propshaft.

Trust me, that little lot is a huge amount of work, which aside from anything else needs steel and aluminium welding. I did it the other way around, as I got an MGB gearbox with overdrive and a close ratio gear set into my MGA which makes it hugely more fun and much more usable on motorways. Not sure why you might want to fit an MGA gearbox to an MGB?

MG Mark