The camshaft that I would run in that 406 for street/strip is . The Comp camc XR282HR it's 230/236 dur and 510/520 Lift with a 110 L/S . Also run 1.52 rocker arms . with your other parts it should make 538 hp and 552.1 ft-lbs of Torque . And you will be able to drive that car on the street with this camshaft . And with this set up the 3.91 gear will be ok . But the 4.10 will give a litlle better E.T . Your 3500 lbs car should run 11.90s with that build .