moparmatt89

I have a rebuilt c4 with a manual/automatic valve body and extra clutches, shift kit. When ever i am on the highway and bring the car above 4 grand it spits out tranny fluid from the breather on top of the tranny. Has anyone else had this problem. What is there to do about it. I at first thought that the fluid was maybe too high, but after checking the dipstick that doesnt seem to be the case. I have to add that the tranny is from an 80's mustang and the dipstick is from a 69 mustang, so maybe its not accurate.
Matt