cable or valve body

Don't run it at all until you get something on it (either a Lokar, Bouchillion cable setup or stock linkage) or you'll toast the trans. in a heartbeat. The throttle valve linkage regulates clutch pressure so under light throttle it don't slam gears in. Without the linkage (or cable) the throttle pressure will always be low allowing the clutch plates to slip and burn up real fast. It won't shift right without it on there so you have to get it.

FYI: I run the Lokar cable and it works real good and was easy to adjust. I have heard some guys say the Bouchillion is a better cable but I don't know.