There are a few options when it comes to cams...
Comp Cams 410 cam an excellent cam for a daily driver and towing. Offers great off idle torque and keeps the overall power curve nicely inside the rpm range of the stock PCM without any tunability problems. Slightly rougher idle than stock. It works fine with stock heads/springs.
Comp Cams 422 cam is more aggressive. In order to run the 422 cam, you must upgrade your valve springs to handle the .500 lift. It is recommended that you get a tune (bamachip) to add more fuel and raise the rev limiter to achieve the benefits of the cam. The addition of some exhaust port work and headers will enhance this cams output. Lopey idle.
Both cams are ground on reduced base circles, therefore, you will need longer pushrods. I do believe 5.525 are needed if the head has been milled, 5.550 if the deck surface/head are stock.
As far as torque, both cams peak in the 2500-3000 rpm region depending on the engine setup. The 410 of course would be lower, and and the 422 will be slightly higher and build more hp higher in the rev range.
Delta Cams also makes custom ground cams as well...