The hemi grind cam seriously affected torque down low, causing the loss of almost 400 rpm stall speed. It is tough enough when you run a bit bigger cam in a 440, trying to use a stock converter, but with 100 less cubes to make torque, it REALLY hurts. On the other hand, when you ADD 100 CUBES, like i did, things get interesting and you can get away with a big cam!