Re: THM200 Metric transmission (Bad rap?) I actually prefer a 200-4R in a g-body compared to other OD transmissions. It just becomes a matter of the power level it can handle. I recall reading that the 200-4R was developed from the TH200 in an attempt to retain a light weight trans with OD. On the other hand, I've changed TH200's in several cars when they decided to give. The 200-4R in my previously owned '85 SS decided it didn't want to shift to 2nd gear anymore. My '87 Aero blew the front pump seal and had a faulty TCC solenoid. I've also replaced a few 200-4R's in Cutlasses in the past. You must be having one hell of a stroke of luck! I think people generally ditch the 200 because it can be replaced with a TH350 so easily. And for the OP, if your expenses look like they're going to get out of hand to repair the TH200, you might really want to consider a trans change. I see good Th350's all day for less than $125. Just something to keep in mind while you're sorting out the issues.