V10 in my GTA (LT1/T56 for the beginning)
Re: V10 in my GTA :)
I still would like to go with V10 
I just found used Viper input shaft for $150, bell housing I already have
.

Does anybody know what's the difference between Camaro/Firebird T56 and Viper T56 adapter plate? That's plate marked red on picture below.
I want to know if I buy Viper input shaft, do I need also Viper adapter plate or I can use Camaro/Firebird plate, eventually with some modifications?

Also, is it OK to put LT1 T56 behind V10 without any modifications (because a lot of torque), I don't use my car for drag races or something like that, just like weekend car

I just found used Viper input shaft for $150, bell housing I already have
.
Does anybody know what's the difference between Camaro/Firebird T56 and Viper T56 adapter plate? That's plate marked red on picture below.
I want to know if I buy Viper input shaft, do I need also Viper adapter plate or I can use Camaro/Firebird plate, eventually with some modifications?

Also, is it OK to put LT1 T56 behind V10 without any modifications (because a lot of torque), I don't use my car for drag races or something like that, just like weekend car
Junior Member
Joined: Oct 2011
Posts: 52
Likes: 1
From: Westfield,MA.
Car: 1985 Z28
Engine: 8.3 ltre viper
Transmission: Tremec T6060
Re: V10 in my GTA :)
The viper t56 has a longer output shaft. You will need to change it. The lt1 t56 will handle the stock gen1 viper motor if you don't have crazy tires and beat on it. You could get a custom input shaft made longer. Then make a spacer that has your lt1 bolt pattern an viper bolt pattern.
Supreme Member
iTrader: (1)
Joined: Mar 2007
Posts: 3,525
Likes: 7
From: Arlington, Tx
Car: 91 Camaro RS
Engine: empty bay (for now)
Transmission: Built T-56
Axle/Gears: 3.42 stock posi disc
Re: V10 in my GTA :)
get the viper input shaft, have it swapped in, and drop the trans in with a cross member mounted tq arm and call it a day.
leave the complicated thoughts to figuring out how to cram a v10 under the hood.
leave the complicated thoughts to figuring out how to cram a v10 under the hood.
Re: V10 in my GTA :)
But what about adapter plate? Adapter plate is not the same as Vipers. I doubt that Camaros clutch slave cylinder will be long enough to move the Vipers clutch
Junior Member
Joined: Dec 2011
Posts: 78
Likes: 0
From: Vancouver Canada
Car: 1988 Trans Am GTA
Engine: 5.7 TPI
Transmission: 700r4
Axle/Gears: 3.27
Re: V10 in my GTA :)
quite possibly the only GTA with a v10 in the world, and yellow too! amazing, can't wait to see the finished product
Supreme Member

Joined: Jan 2011
Posts: 1,932
Likes: 9
From: Lynden WA
Car: 84 Trans Am, 84 Fiero, 86 944
Engine: 5.0, 2.5, 2.5
Transmission: 5spd
Re: V10 in my GTA :)
it was originally red, but i think you should leave it red inside (unoticed of course lol) but yes great car and gonna be amazing
Re: V10 in my GTA :)
Shone, Private msg 85MikeTPI and get his attention. He's a crackhead with t56 questions from what i remember. Or you could ask a side post in the trans forum about your problem.
Supreme Member
iTrader: (1)
Joined: Mar 2007
Posts: 3,525
Likes: 7
From: Arlington, Tx
Car: 91 Camaro RS
Engine: empty bay (for now)
Transmission: Built T-56
Axle/Gears: 3.42 stock posi disc
Re: V10 in my GTA :)
mike built the t56 thats been in my car for a few years now
Supreme Member

Joined: Jan 2011
Posts: 1,932
Likes: 9
From: Lynden WA
Car: 84 Trans Am, 84 Fiero, 86 944
Engine: 5.0, 2.5, 2.5
Transmission: 5spd
Joined: Aug 1999
Posts: 858
Likes: 6
From: Elkton MD, USA
Car: 1985 Camaro Z28, VIN F
Engine: 427 sbc, HSR
Transmission: T-56, self rebuilt 700+ hp
Axle/Gears: Moser 12bolt, 3.42 trutrac
Re: V10 in my GTA :)
I just found used Viper input shaft for $150, bell housing I already have
.
Does anybody know what's the difference between Camaro/Firebird T56 and Viper T56 adapter plate? That's plate marked red on picture below.
I want to know if I buy Viper input shaft, do I need also Viper adapter plate or I can use Camaro/Firebird plate, eventually with some modifications?
Also, is it OK to put LT1 T56 behind V10 without any modifications (because a lot of torque), I don't use my car for drag races or something like that, just like weekend car
.Does anybody know what's the difference between Camaro/Firebird T56 and Viper T56 adapter plate? That's plate marked red on picture below.
I want to know if I buy Viper input shaft, do I need also Viper adapter plate or I can use Camaro/Firebird plate, eventually with some modifications?
Also, is it OK to put LT1 T56 behind V10 without any modifications (because a lot of torque), I don't use my car for drag races or something like that, just like weekend car

The '93 LT1 T56 you have should just get resold immediately. The viper only came in the MM6 gear set and the M28/M29 gears in the '93 will need 80% of the internals replaced to work with the viper input/counter. (The '93 is only rated for 350-400 lbft of TQ, while the vipter T56 is rated for 550)
The viper front plate has the slave bolts clocked differently for the viper slave cylinder. You'll need to change over to the viper front plate in order to use the longer viper slave to get you the reach you'll need. (Or go to an aftermarket hyd slave like McLeod that you can space out from the plate)
All said, dump all the T56 stuff you've gotten so far and look for a real viper T56. You'll be ahead in the long run.
mike
Re: V10 in my GTA :)
Thanks a lot 85MikeTPI 
I figure it out a few days ago, so it's better option for me to buy complete Viper T56.
For now, I'll put this LT1 and T56 in GTA, so when I collect enough money for Viper T56, then I'll put V10
Wheels are some brand name King from Germany and originally came on BMW.

I figure it out a few days ago, so it's better option for me to buy complete Viper T56.
For now, I'll put this LT1 and T56 in GTA, so when I collect enough money for Viper T56, then I'll put V10

Wheels are some brand name King from Germany and originally came on BMW.
Re: V10 in my GTA :)
Because I don't like 4th gen that much
, and this is USA car and I can't register it in my country, there is no legal way to import and register foreign car which is 20 years old
, and this is USA car and I can't register it in my country, there is no legal way to import and register foreign car which is 20 years old
Re: V10 in my GTA :)
Here You can see a big weight difference between LT1/T56 and L98/700R4.


LT1 Engine harness.

I removed complete enteriour, painted all in black and I'll put only front seats. If anybody wants to know, all enterior I removed weight 220lbs/100kg



LT1 Engine harness.

I removed complete enteriour, painted all in black and I'll put only front seats. If anybody wants to know, all enterior I removed weight 220lbs/100kg


Last edited by shone190; May 10, 2012 at 04:50 AM.
Joined: Jun 2000
Posts: 5,364
Likes: 51
From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: V10 in my GTA (LT1/T56 for the beginning)
Did you by any chance make a dimensioned sketch of the backing plate for your 9 bolt???
Joined: Jun 2000
Posts: 5,364
Likes: 51
From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: V10 in my GTA (LT1/T56 for the beginning)
Can you post it? I could measure some spare brackets I have but if you have the datums that would be awesome, need to fab a custom rbacket for Z06 rear calipers on my 9 bolt
Re: V10 in my GTA (LT1/T56 for the beginning)
Hahhaha, no but I live with my girlfriend and we are in relationship for 13 years, so as I am 
@Twin_Turbo
Off course, I'll post it for a weekend.

@Twin_Turbo
Off course, I'll post it for a weekend.
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