I used that cam in my 440 that I built for my '64 Polara. Unfortunately, I used the original '64 727 converter, a Dana 60 3.54 with 275/60/r15 tires and that made it a dog off the line. It also overheated in parade laps. I used the Stainless Steel Brake Manual master cylinder with the A-body disc brake conversion so that was not an issue. The answer I think is a looser converter (3000+)and more gear. With that you can have your A/C and power brakes. Good luck