I don’t get it, the car accelerated quick and smooth before taking engine out for restoration and body work, put back together, same parts, clutch pressure plate, etc., but now it’s almost impossible to accelerate from first gear without engine bogging to a quiet stalled out sound, sometime stalling completely or barely accelerating and hesitating no matter how much or how little throttle. Note: we did change from 2bbl intake and carb to 4bbl. Any suggestions? It’s unsafe to pull out in traffic. Once going in 1st, 1st through 4th is just fine. Please help and nice to meet everyone!