This trans was rebuilt over 5 years ago, has several valve body and pump modifications, shifted very hard and positive and held up to a 600+ HP big block 477 cid chevy. I have just moved on to a TH350 to get a trans brake....the trans was beginning to shift late out of 1st and 2nd while the fluid was cold, once the fluid warmed it was normal. I was using type F since it was rebuilt with no problems and the temps were never over 175* it is been modded for non lock up operation and I used a non lock up 3000 9.5 inch stall on it (sold) fluid is nice.....a bright red so I`m not too sure whats going on. so it`s being sold as is, for core value, pick up only in detroit area. 75$ comes with F body tailshaft and T/A mount bushing.