I run the MP .557 solid cam in the 440 in my 63. The .509 is almost like a hydraulic version of the .557. Anyway my 440 is a stock bottom end with KB pistons that come out to 10.0 comp with the 906 heads I use. I have run 11.49 in my 63 and it is street car I drive everywhere including to and from the track. The .509 will scream in the right setup for a hydraulic cam. Ron