someones gotta know whats up! trans from uncle at used parts dealer!
didnt pay alot !stock trans on freeway 5th g. 65mph about 3500 rpm ish.
now this one on freeway 5th g. 2100?3rd gear is like 5th on stock si trans from day 1 always slipped !but only on hard takeoff and im good with solid take offs cant spin my tires ! if i takeoff soft then mash on it wont slip untill i shift !all is new 8 months ago never had one go bad so fast ! i know i will have my own answer after i rip it out but anyone ever have this happen?im pissed lots of $$$$ spent not done ! any ideas? any would be great!

motor is stock so its not power issue
what kit wont slip but street friendly ?
just want to do rite this time !