I have a 85 corvette 427 small block chevy swapped. 4 barrel quickfuel electronic choke carb.
I was out driving when out of nowhere the car wouldn’t put power down, when on the gas it shakes front to back and is running pretty bad. Shifts fine, doesnt seem like rear end problem to me. Checked the plugs had a bit of carbon build up, was running pretty rich a few weeks ago but have since then adjusted the carb. Now it smells like it’s running lean. Only thing I’ve done to the car before it started acting up was tighten the very loose valve covers, problem started right after that. Anyone have suggestions? It’s much appreciated!