I have a Chevelle with a 250 Inline and 350 turbo tranny I run down the drag strip. I leave in "Drive" and hold the throttle wide open. The tranny does not shift out of first gear until the car is going about 40 mph and does not shift out of second gear until about 50 or more. By this time I am closing in on the finish line and am only in third gear a very short time before I cross the line. I would like to make the shift points much sooner but the problem is if I leave the line in Low gear and upshift the car manually it does not make any difference, she still shifts on her own like she does when I leave the line in Drive. Is there any way I can do something to this bone-stock tranny to make it shift on it's own at a pre-determined speed (or rpm) of my choosing with the car in "Drive" or if not can I adjust the tranny to shift immediately as I manually move the shifter from low to second and then from second to third?
Thanks, Ken B
