WANTED: Viper T-56 6 Speed

WANTED: Viper T-56 6 Speed

Author
Discussion

nos707

Original Poster:

3 posts

197 months

Thursday 19th June 2008
quotequote all
Hi,

Does anyone have a Viper T56 6 Speed Gearbox for sale?

Anyhing considered.

Thanks

Tom

GTS

478 posts

253 months

Thursday 19th June 2008
quotequote all
Yeah I have a 9000 mile one out of my 2001

Only removed because of upgrade with new gear ratios

07974 216129


Edited by GTS on Thursday 19th June 22:56

V1PER

6,630 posts

267 months

Thursday 19th June 2008
quotequote all
Hi Tom
Yep the yellow 02 is my new one..Had it three yrs...

Carl above would be your best bet mate..

DennisACR

108 posts

198 months

Thursday 19th June 2008
quotequote all
I have one of a 95 RT/10 in good condition, stock.
and another one with broken 6th gear out of my 2001 RT/10, stock.

nights@gmx.de for offers, any reasonable offers will be discussed.
Cheap shipping to whole EU can be arranged.

Thanks
Dennis

Boosted LS1

21,198 posts

267 months

Thursday 19th June 2008
quotequote all
Dennis, how did you break it? I thought the viper version was pretty bulletproof or were you on slicks?

DennisACR

108 posts

198 months

Friday 20th June 2008
quotequote all
boosted, to crash 5th or 6th gear or both on this car is pretty easy. It just takes a little time :-)
In my opinion, the critial situation is to kick the car hard at lower rpm in 5th or 6th gear. You have such a tremendous torque on the transmission shaft, because the engine wants to make the car move but cannot when you try to rev up from 1500 or 2000 /min
(respect the power and torque diagram of the viper engine. It is not usual that you have such a lot power from down below).
Another more often critial situation is when you are motorway racing (where do you need 6th else?) and throw out the clutch too fast, you just punt the journals. It's like 'crack' and gone. Especially the 6th is critical because it should be a fuel-saving gear. Means: it is a lot loooonger transmitted / good punch of power to a quite immovable victim.
My advice is to drive the 4th gear good and then move to 5th, so you have 3k/min or more. If you have no problem with buying new trannys every 20000km, throw the clutch out like you don't care.
When you look around, you can see that the Tremec (Borg Warner) T-56 tranny is a heavy duty transmission. You can find in older v8 musclecars and even newer ones (transam etc..).
The problem is, that the original T-56 transmission is a 4 gear one. The 5th and 6th gear were adapted on a shaft that is connected with some kind of tenons or journals. I can't explain too well in English. It's "Zapfen" / "verzahnte Welle" in German. At this spot, the complete shaft, consisting of two parts, is quite weak. The adapted 5th and 6th gear break oftenly. This is definitely a children's disease, and it will always be. 1-4 is no prob.
But it is easy fixed. We have people who make it for about 1000 EUR (the gasket kit, you would need when you just take it apart and built it together again costs about 300 - 600 USD, depending on where you buy it).

It would be interesting to know if they changed something on the current SRT or ACR regarding the transmission.
I can't imagine else.

Correct me if I'm wrong.

Boosted LS1

21,198 posts

267 months

Friday 20th June 2008
quotequote all
Thanks Dennis, very informative.

nos707

Original Poster:

3 posts

197 months

Friday 20th June 2008
quotequote all
Thanks GTS, will be in touch again soon.

DennisACR

108 posts

198 months

Friday 20th June 2008
quotequote all
Boosted LS1 said:
Thanks Dennis, very informative.
I bet you find 100 pics in the VCA forum. They know this problem too, even though they may not drive above 120 ; )

LS7427ci

91 posts

198 months

Friday 20th June 2008
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I have G Force built T56 trans on the shelf very strong wider gear sets and 300M shafts.

V10 BAT

1,718 posts

241 months

Saturday 21st June 2008
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Hi, 1 would they install in a viper without mods.
2 whats the damage cost wise.
cheers Dave t.

V10 BAT

1,718 posts

241 months

Sunday 22nd June 2008
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Thanks for the info pm.nice to know there is a strong box out there.

LS7427ci

91 posts

198 months

Sunday 22nd June 2008
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Not a problem!!!

chuntington101

5,733 posts

243 months

Tuesday 24th June 2008
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LS7427ci said:
I have G Force built T56 trans on the shelf very strong wider gear sets and 300M shafts.
very strong setup there mate. the corvette guys often use G Force built boxes in there 1000++bhp twin turbo cars.

LS7427ci

91 posts

198 months

Tuesday 24th June 2008
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I know a few of them will have been built by me biggrin

neilsfishing

3,502 posts

205 months

Tuesday 24th June 2008
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how much do thay cost ?

DennisACR

108 posts

198 months

Saturday 28th June 2008
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best offer