TVR T5 main shaft 5th gear snap ring...

[Adrian@]

I have had now had my gearbox mainshaft modified to have a capture cap over 5th gear with an additional snap ring groove. A@

Edited by Adrian@ on Tuesday 14th May 11:03

[ukkid35]

Adrian@ said:

Looking around the forums I find that the TVR main shaft 'looks' to be a 27 spline GM unit AND THEN, I have a gearbox that was rebuilt 6 thousand miles ago (with the previous owner by a TVR specialist).

I thought TVR were the only manufacturer to use a 27 spline mainshaft, which never made sense to me

So perhaps you're right and GM did too

If that's the case, why is the TVR fifth gearset 33/53 not shared with GM?

[ukkid35]

The video you shared definitely says that GM used a 27 spline mainshaft

And yet the heavy duty 'Sebring 0.8 gearset' is only available in 28 spline

You'd think there'd be adequate demand from GM owners for there to be a 27 spline version

https://www.5speeds.com/t5/s80.html

[Adrian@]

Paul, it is your musings that bought up the 27 spline, that then led onto the GM post, I have fired off an email questioning to 5speed.com.
Here is the spec on TVR's listed snap ring 1000-139-032 (1.1250 ID, 1.3725 OD, 0845 thickness) I have ordered two, BUT these are listed IN Ford kits as the one to do the Ford. A@

Edited by Adrian@ on Sunday 28th April 16:43