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Trans Swap into an 85 SS

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  #1  
Old 11-24-2010, 06:07 PM
monoxide85SS's Avatar
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Join Date: Nov 2010
Posts: 8
Default Trans Swap into an 85 SS

Hello all, I am new to this sit. I have an 85 SS. Currently has a 305 thats beat, but I am currently in the process of building a 350 (010 block) for the car. I was thinking about going with a different trans. Was thinking about a TH350 and getting rid of the 200r4. Does anyone know if I will need to have the drive shaft cut. I have heard that its different and then I have also heard it needs to be shorter. I also have a G-Force crossmember for the 200, so will it be possble to fab this to fit the TH350 as well. Any help will be much appreciated. I have access to a shop, welders, cutters, an a whole slue of tools so I am not worried about all of that. Just trying to put the best set up in the car that I can.

Thanks Guys.
Dan
 
  #2  
Old 11-24-2010, 07:20 PM
Join Date: Jul 2006
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Posts: 518
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these cars came with 3spd trans so just look for a car that came with one for your cross member,drive shaft and shifter cable.
yes you can mod. anything but why bother . just sell that crossmember and get another one.
 
  #3  
Old 11-25-2010, 06:43 AM
Join Date: Jun 2009
Location: Niles, Ohio
Posts: 126
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Driveshaft is the same, crossmember is different, I would just get another crossmember and sell or trade the one you have for the 200. Going to a th350, if you still have the 3:73's, expect turning 33-3500 rpms at 55mph and a gas mileage drop.
Oh and if its floor shift the cable and bracket on the trans are different also.
 
  #4  
Old 11-25-2010, 11:23 AM
monoxide85SS's Avatar
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Wow, that high of a rpm with a th350. Thats crazy. I also have a B&M shifter to go in once I do all these mods. So, not to worried about the shifter brackets and cables. So, what would be a good choice on a trans for the set up with a 350 and a 3.73.
 
  #5  
Old 11-25-2010, 12:08 PM
Join Date: Jul 2006
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Posts: 518
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go with the th350 or if you want a o.d trans get a th700r4
i have 3spd's in both of my montes and its not that bad.i can live with it.
but everybody has a different opinion on what they like.
 
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