Hey guys, I got an engine/trans problem? I put reman trans in a 84 club-wagon(van) 351 windsor. I really don't know how it ran before, cause slipping bad, the reman shifts ok ,but when it gets to 3rd it sounds like the engine is going 80mph at 55mph,the trans is a 3spd c-6. It seem like the carb might be at fault? Any thoughts/ideas? (Even the helpers need help sometimes)

The problem lies in the carb,I should have known.