Ok.. I have a 72 blazer which I decided to pull the th350 and rebuild due to poor shifts (my first rebuild). So heres my question.. The vavle body in my trucks tranny is different than the valve body out of my 70 Nova.. The underside of the valve body on the nova is completely solid while the truck trannys Valve body underside looks like its been shaved with little steel balls stuck into the holes. The valve bodies have the same casting numbers, but the one out of the truck tranny has a big C cast in it after the numbers. Someone told me this means its a lock-up th350C tranny, but there were no electrical conectors on the case..It is beginning to look like the tranny is not the original, as the codes are no where to be found on the case. So my questions are: 1. What is the difference in the valve bodies? 2. Is there any way it can be a th350C without electrical connectors? 3. If it is a th350c will a non-lockup torque converter work? CM001@aol.com Any other suggestions are welcome, and thanks!!