Thank you to everyone that posted to my post!
I am building the 383 engine for street use and trying to achieve the best fuel economy for going on long trips but still being able to have good performance. This cam is supposed to give 19 inches of vacuum at idle and have excellent throttle response. I am going to be installing a six pack set up on it with a 5-speed standard transmission with 3:23-to-3:91 sure grip (depending on the transmission gear ratio ) with a 27-28" tall rear tires.