I have an 84 chevy c20 with a 350 and a 700r4 tranny in it. It came stock with a quadrajet carb. I just put an Edelbrock carb on it and now it wont shift out of first gear. I started having this issue before I swapped carbs. It wouldn't shift until about 30 mph which was about 3500 rpm. Now that I have swapped carbs it wont shift at all. Any Ideas?