Roma

Thanks Tim, I will look araond there

Can someone identify if this is a TH200 or already a TH350 yoke ?



and how do I remove the yoke and then the u-joint from the yoke

InfidelCorvette

I would rebuild the TH400. $300 rebuild vs cost of a 200 + rebuild or a build 200. You would be coming out WAY ahead with a much stronger transmission.

Roma

The TH 400 from starting this thread is already rebuild and is working like new now. But the idea of an overdrive transmission was not forgetable and so a TH200-4r is now sitting in my garage, waiting for the things to come

Haggisbash

Do a lot of reading before you decide which way you want to take your 200-4r. They can be built strong with the correct parts. I went with what was called a stage 2 build that on reflection was not what I need as I found the trans shifted too hard for my liking unless you were really putting the right foot down. This shifting has spoilt the car as a cruiser and so far my efforts to rectify things have cost hundreds $$'s with no end in sight yet. On the plus side the lower first gear and the overdrive do make the car a nicer drive.
What differential gear ratio do you have? Mine was 3.08 and I had to change this to 3.55 to really make 4th gear a practical gear where I mostly drive (there are a lot of hilly roads where I live).

'75

The yoke in the picture wont work on a corvette, needs to have straps to release the u-joint or you can't get the drive shaft out. CK performance transmissions offers a complete rebuild kit with all you need to modify your trans for any power level. Contact him with your questions, he will answer them all and get you the right parts for your power level. Cris K. is one if not the best 2004r builder.

toobroketoretire

That kind of yoke and u-joint has to be heated with a torch to melt the nylon that has been injected into it. But, its the wrong kind of yoke anyway because you'll need a "bearing strap" style of yoke.

Roma

I have a 3.08 rear. What exactly is the disadvantage ? And I still would prefer the smooth shifting of the TH400, as Im not a racer . So I maybe can leave as is and it can handle the power of my SB ?

c3_dk

What is your wheel size?

c3_dk

What do you all think about this 2004R, what kind of power can it handle?
Is it worth buying?

http://www.ebay.com/itm/2004R-200-4R-Performance-Stage-2-Transmission-Free-Torque-Converter-650-HP-/321824949726?hash=item4aee4305de&vxp=mtr

Haggisbash

The 3.08 gear with a 200-4r will pull the rpm down to about 1500 - 1600 at 100 kph this is a little low with a std sbc 350 jmpo. I had to keep unlocking the torque converter lock up on hills and dropping back to 3rd gear as well quite often. I feel the 3.55 gear is the best compromise but a lot say the 3.70 is best. I'm sure the smooth shifting can be retained in the 200-4r with the right combo of parts.
The TH400 is a very strong trans but it also takes a lot of power just to make it work plus it has quite a high 1st gear so it combined with a 3.08 gear is not a rocket off the line esp with a std small block engine.

Roma

Wheel size 225/70 15 all wheels ;-)