I have 98 z28 with a few minor bolts on and it seems I'm shifting at 5k from first to second and so on. I have a vinci / powermax tuner and still with it tuned to performance for trans setting it still seems to to shift at 5k. Isn't that low???

 

yes, i have my shift points set for 6200..set rev limiter around 64-6500

 

your shift points should be about 500rpms lower than your peak power levels from your cam..that way it shifts at the peak

 

x2