Gearbox choices ??

Gearbox choices ??

Author
Discussion

corvettedave

Original Poster:

274 posts

157 months

Tuesday 9th September 2014
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Iam trying to work what to go for gearbox wise?, will be going with 700 bhp plus in my gtr, so needs to be strong

what has every else used and your thoughts on them please and anyone put a sequential box in?

cheers

dave

Racing Roj

488 posts

163 months

Tuesday 9th September 2014
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I have a g50 5 speed box with 600hp and although the 1st gear is about as useful as an ashtray on a motorbike I am happy with it. I originally thought about the Getrag 6 speed box with centre cable shift but because of the torque I don't need 6 gears for general use.
Regarding sequential boxes as I see it you have 2 choices: -
1. Albins synchromesh (starting at about £12,500 the importer is one of our racing Ultima friends) with either centre lever shift or a steering wheel mounted paddle shift (add about £1,000).
2. This is a Cartonics kit for the later cable shift boxes costing about £3,600. Paul Dixon (V8yes) has one fitted.

mt308

438 posts

143 months

Tuesday 9th September 2014
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In built up areas with lots of traffic, a low 1st gear can be quite useful. On an open road or on a track it will pull away in 3rd...

Steve_D

13,746 posts

258 months

Tuesday 9th September 2014
quotequote all
Unless you plan to go racing I would stick with the standard G50 'box.
If you plant all 700 ponies you will just spin the wheels so a G50 will cope.

No point in sequential for road use as there is so much torque you don't need fast changes.

A 4 speed 'box would be fine. I have 6 but tend to go up the changes 2 at a time. My 500HP engine has almost 500LBF FT pretty much throughtout the rev range so gear changes can be quite lazy.

Steve

corvettedave

Original Poster:

274 posts

157 months

Thursday 11th September 2014
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thanks for info chaps