http://vexer.com/automotive-tools/speed-rpm-calculator As RRR said, that's a big hyd cam for a 360. A cam of that size would have a powerband upwards of 7000 . At that rpm , I feel that a solid would be a better choice. And as already mentioned, its gonna need some converter or it will be a dog. My opinion, keep the 440, sell the SB.:D