Shift Kit for THM-200?

[Plain Jane]

Looking for any information regarding shift kits/transmission upgrades for this old 3-speed. Who makes them, which brands to buy/avoid, testimonials, and risks or damages that may be involved. I'm used to driving manuals and have little experience with automatics and what they can do, so please forgive my ignorance.

 

[Plain Jane]

I found this and one thread praising it. Thoughts?

http://www.transgo.com/products.php?category_id=92&parent_id=31&product_id=152

 

[V8 Rumble]

Is your engine modified? Those th200 don't handle it well. They are not desireable transmissions for performance. Upgrading to a th350 which would drop right in would be a great upgrade over the th200.

To answer your question trans go shift kits from what I have read around have a great reputation. I have used b&m shift kits and have worked great.

 

[Plain Jane]

My engine is a bone stock 3800 V6. I had read the 200's have a high failure rate when mated to V8s. What can they handle power/tq wise? I was looking into a 500 CFM Edlebrock Performer carb as well but am unsure if it'll fit. I'll look into the th350 tonight, thank you.

 

[Ferret]

The TH-200 are crappy transmissions. I had one paired to a Buick V6 (3.8Ltr). While it was used in the United States, the transmission handled 20000miles in Tennessee. After I bought the car and had it transfered to Europe, it blew after aproximately 500miles. The traffic here is to tough to keep any TH200 alive. Especially the TH-200C. Never hook it up to a V8. If you got the opportunity, throw it out and swap a TH400 in 😉 a TH350 is fine too ^^

I know a few other people who had issues with the TH200's and if they had to share their issues/worries with said transmission, they'd rant for hours

 

[johnson350]

I'm currently running the TransGo shift improver kit in my 200, and it seemed to really help alot.

The 2-3 shift is super firm now, the 1-2 is waaay better, but could be a little firmer IMO. I've heard a billet servo from a 200-4r would work, this should really firm it up the 1-2. Don't get me wrong, the kit overall improved everything. Quite a big difference. I am also running the Buick v6, slightly modified, and never had any problems with the transmission, even before I put in the kit.

Also it took me only a few hours to install. I would say it woke it up, shifts like a nice stock th350 now.