Transmissions and Drivetrain Need help with your trans? Problems with your axle?

TH200 to Th2004r

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Old May 11, 2018 | 09:14 AM
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TH200 to Th2004r

Hi!


I´m doing a swap in my 82 trans am from the original th200 to the th2004r.


the Problem is the clearance on the top side of the th2004r. is this possible that the th2004r is bigger that the th200?


If i wanna go straight with the driveshaft the th2004r is to big and i have no space between the tranny and the car.


Did anyone has this Problem??


Thanks alot
Martin
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Old May 11, 2018 | 06:42 PM
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From: Aridzona
Car: `86 SS / `87 SS
Engine: L69 w/ TPI on top / 305 4bbl
Transmission: `95 T56 \ `88 200-4R
Re: TH200 to Th2004r

You should have no problem placing the 200-4R in a third gen. No floor mods were done for them to fit in the 89 Turbo T/A. The mount does sit fairly far back and low. So don't expect the 200-C crossmember to fit it. Also, 82 had two crossmember holes per side. 83-92 has three. Perhaps you've run into that?

You should just need a crossmember that supports the mount at the right place, and has a torque arm relocation bracket.
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Old May 12, 2018 | 04:39 AM
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Re: TH200 to Th2004r

I have not the Problem with the braket.


My Problem is the floor pan of the car. when i put the tranny in the same hight as the drive shaft it hits the floor pan on the top side of the tranny. maby a 82 Trans Am has another floor pan as the 83-92 Trans Am?


Hope anybody here has done the mode and has the same Problem?


thanks alot
Martin
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Old May 12, 2018 | 07:17 AM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: TH200 to Th2004r

Originally Posted by Noone
I have not the Problem with the braket.


My Problem is the floor pan of the car. when i put the tranny in the same hight as the drive shaft it hits the floor pan on the top side of the tranny. maby a 82 Trans Am has another floor pan as the 83-92 Trans Am?


Hope anybody here has done the mode and has the same Problem?


thanks alot
Martin
Is the trans bolted to the engine? What engine? The floorpans are the same 82-92. Sounds like yours is pushing the trans up to high.
A 200r4 takes a special trans crossmember to make things fit. (I happen to have one for sale)
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Old May 14, 2018 | 03:18 AM
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Re: TH200 to Th2004r

Originally Posted by TTOP350
Is the trans bolted to the engine? What engine? The floorpans are the same 82-92. Sounds like yours is pushing the trans up to high.
A 200r4 takes a special trans crossmember to make things fit. (I happen to have one for sale)


I have the Original 305SBC Engine. What crossmember did you have for sale? Are you shure with the floor pans on early third gen?


thanks Martin
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Old May 14, 2018 | 07:05 AM
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From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: TH200 to Th2004r

Originally Posted by Noone
I have the Original 305SBC Engine. What crossmember did you have for sale? Are you shure with the floor pans on early third gen?

thanks Martin
Here are a few rare parts pix from another of my threads for comparison to a stock one...
Originally Posted by TTOP350


Hawk left, TTA 2piece middle, stock right. <br/>The TTA piece has been used with a few GM engineering ZF swaps I've seen so I know it will work.



Hawk left, TTA 2pice middle, stock right.
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Old May 14, 2018 | 08:29 AM
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Re: TH200 to Th2004r

Originally Posted by TTOP350
Here are a few rare parts pix from another of my threads for comparison to a stock one...




OK. What do you want for the stock TTA Crossmember?


thanks alot
Martin
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Old Jun 22, 2018 | 07:39 AM
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From: Sterling Heights, MI
Car: 1992 Z28
Engine: LC2
Transmission: GM 2004R
Re: TH200 to Th2004r

Has anyone mentioned the regular 2004R overall is a crap transmission?
I've had 4 TTA's and I've had to rebuild the Transmission on each one at least once. (actually, I think between the 4 car's I've had a total of 8 rebuilds until I found a guy who builds them proper)
The turbo Trans AM and GN transmissions each have a different valve body and clutch packs compared to any other 200R4 and the 2004R out of any other generation GM car will be crappier still. It's not generally regarded as a high-performance transmission.
I do not recommend swapping one in unless you have an overbearing reason.
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