4 Barrel

The problem: on initial startup engine runs rough then smothes out to a nice idle. On acceleration acts like it's flooding and or dropping a cylinder. The cam lift: 294 in., 441 ex. duration: 276 in., 288 ex. I know that's a little much but I like a little lope.

Something isn't right in your cam specs, but I ran a stock 340 cam with 340 intake and AVS (port mismatch) on a low comp 273 back in the 1990s. Never had any drivability problems.