With the mini ram, you can get away with more cam than that, especially in a 383. The last one i did was 236-244 at .050 on a 112. Its in a 85 Corvette, tpis mini ram intake, mildly ported Canfield 195 heads. It has a nice rumpity idle, but not overly crazy. Still drives nice, has tons of bottom end. It did take a bit of tuning, but it is a solid 11 second 115 mph in syreet trim car that gets 25mpg. If you still had the Tune port set up, then putting in a bigger cam is counter productive, as the long runners kill power above 4800, where the bigger cam would start to really work.
Frank