I have a 5.9 crate motor that I picked up for my Dart. It was in a customer's 71 340 Cuda and a found a 71 340 and swapped out the motors. He didn't want the 5.9 and I got it for 1000.00.
I bet it doesn't have 200-300 miles on it and thought it was a real good deal beings it included the flywheel, oil pan and intake. I did drive the car with the 5.9 and it ran real good. I'm thinking it is the 300hp version. Ran like 300hp and has the dual plane intake. I would like to get it up close to 400hp. The book says it has a .385/.401 life cam. The 380hp version has a .501/.513 cam but having a hard time finding that MP cam. I going with a 4-spd and 3.55 gears. Will be a street car and will drive on cross country trips. May use 3.23 gears on the trips. Going to run a Holley for now but would like to go to EFI someday. I have a few questions.

What would be a good roller cam? Would like to keep the lifters and valve springs which are the same as the 380hp version.

What is the compression ratio?

What is the rocker ratio?

What is the problem with using a/c on this motor?

What other tricks could I do while it is on the stand?

Many Thanks