200r4 to turbo 350....

[413Cutlass]

I know it's been asked, but I need a rundown of what I need for the swap. My 200r4 is done, clunks into 2nd, 4th is gone, and from a stop it's a shitshow... SO I have to do the swap pretty much. What do I need? I'm hoping all I really need is a driveshaft since I have access to one easily. I know the 200r4 is better in almost every way, but I dont have money for a rebuild, and I have a turbo 350 just kinda sittin around.

 

[RegalBegal]

If you go with the TH350, you'll need a different cross member as well as a longer drive shaft. What's better? Well, that depends on how you drive the car. Daily driver....go with the TH200-4r. Weekend warrior....the TH350 is your best bet, especially if you have a heavy foot. OD transmissions can be built to take abuse, but it aint cheap. You can rebuild (stock) a TH350 for about $100 yourself.

 

[413Cutlass]

I read that if you use a short tail 350, and it's an 84 and up gbody the driveshaft should work...
Any truth to this?

 

[413Cutlass]

And what would the length be for the driveshaft for the 350? I've got a line on one, just need to know the length to be sure.

 

[dan2286]

Use the same driveshaft, the difference of the two is too small to matter.

 

[axisg]

the 350c to 200r4 in my 84ss used the same driveshaft, diff crossmember

 

[413Cutlass]

and obviously I need a turbo 350 yoke correct? Or is that the same?

 

[Blake442]

They're the same.

Driveshaft/slip yoke is identical between 200-4R, TH-350, and THM-200.

 

[Papa_Wheelie]

I'm considering doing the same swap with my 86 Monte Carlo SS..Where would one find a crossmember?
When measuring driveshaft length, You go from the tailshaft to the differential input, correct?

 

[RegalBegal]

Here's one vendor. http://www.the-transmission-center.com/ ... member.htm You can also find them on Ebay.