Noble M12 GTO-3R Gearbox

[28Ace82]

Hi all,

I was wondering, does anyone know if there are any advantages to the 5-speed transmission in a GTO-3 vs the 6-speed version in the R? I have read somewhere that the 5-speed is stronger but most places say the 6-speed is more durable.
Is this all down to the differentials? Or can the actual gears themselves break down more on one vs the other?
The 5-speed has lower ratios for 1st and 2nd, so I'm thinking it would actually be faster to 60 with the 5-speed?
The 6-speed has lower ratios for 3rd 4th and 5th, so would be quicker from 60 onwards I presume. Would you even be able to detect any difference in the speed do you think?

If I was to be driving a GTO mostly on the road, with the occasional trip to the track, which diff would be the best, open or LSD? I have heard that the open diff is better on the road and easier to drive. Is there any truth to this or is having the LSD better in every regard?

Any advice would be greatly appreciated!

Thanks in advance,

Andrew.

[Mannginger]

Pass but hopefully some kind mod will be along shortly to drop this into the Noble sub-forum where no doubt you'll get some good answers

[xRIEx]

28Ace82 said:

Hi all,

The 5-speed has lower ratios for 1st and 2nd, so I'm thinking it would actually be faster to 60 with the 5-speed?
The 6-speed has lower ratios for 3rd 4th and 5th, so would be quicker from 60 onwards I presume. Would you even be able to detect any difference in the speed do you think?

That would depend on if you need one fewer gear change to get to 60 with the 6-speed.

[28Ace82]

2nd gets you to 72mph in the 6-speed and 66mph in the 5-speed so only 1 change required in both.

I didn't know there was a special Noble forum, I will post there too, thanks for the heads up!

[lgargour]

I upgraded my 5-speed to a 6-speed with LSD much better set up especially for cruising top speed however I also prefer the LSD on road and track period