hey Dawg... I just built a 383 for my Chevy... I used a CompCams Xtreme 4x4 cam... it's a great grind! I got the smallest one of the 4 choices, and it's plenty for a pickup. My truck also has a Weiand Stealth intake and headers, topped by a Demon carb. Once I get rid of the damn 3.08s this thing is really gonna haul!!