Paul, you need a roller cam.
I'm using this cam for 3 reasons:
1. It was free.
2. This is my engine, not a customer's engine, so no real liability.
3. I'm curious to see how the nitriding and fancy lifters will work.
By the time a regular customer buys a $$$ nitrided cam and $$$$ fancy lifters, you're over the cost of a typical SBF hydraulic roller combination.
You also need something bigger than a 331.
~370ci, hydraulic roller, AFR heads, 500hp. Badda boom, badda bing.