I agree on contacting Dwayne. The cam/ converter combo is obviously critical here. I would ask for a converter that would act like a converter with the same stall charactoristics as a 1970 Hemi 10 3/4 inch stock unit. Have it built to handle the torque of the 440, which shouldn't be very expensive. At most those converters might stall 2800? But the street manners will be like a (almost) stock converter. With that type of converter, you will need a conservative cam that will run smoothly at 1800 to 2000 rpm and probably peak about 5500 at most, maybe 5200. The most fun is just driving around in a responsive combo, very similar to a stocker. The more radical a combo gets, the less fun it is to cruise around in IMHO