My 89' Iroc w/ 700r and its shifting rather odd. I was on it hard yesterday and 1-2 shift was at like 2000 rpms at wot ten i tried again to see if it was just a fluke, it then shifted at 2500 hard anod chirped the tires, all i know that could have something to do with changing the shift points is a Hypertech competiton chip other than that im sure tranny is stock, any ideas?