Well, the small cam upgrade last year wasnt enough so I figured that with the wedding paid off I can treat myself to a few more parts. I wanted a reliable proven combo with no reversion . I'm keeping the stock 350 shortblock and picked up a used LT4 camshaft (100 shipped) new LT4 GMPP 1.6 Roller rockers ($140 shipped), Edelbrock RPM AirGap intake ($200) and a set of freshened 906 Vortec heads ($200 shipped). Some say the 906 flow a tad less , but I hear they have HD Iconel exhaust seats which made them stock on the C/K2500 and C/K3500 motors over the 062 castings on the C/K1500's. Carcraft got 401HP and 428TQ with this combo so I am thinking high 380ish with the revolutions. The couple question I have are, for the camshaft, does anybody know how much I need to tap the dowel in on the front of the cam? Its setup right now for an LT1/LT4 motor. Second.. I have a new set of GMPP head bolts with the integrated washer and teflon already installed on the bolt. I read its 65 ft LBS with these but it that dry, with oil or with moly. I looked online all night for an answer but couldnt find one. And lastly the heads are bone stock but I couldnt pass up the price. I'm going to be running beehives from another company that CFM mentioned so that I dont have to cut the seats, but with the studs, I called a local machine shop and its about 180 to installed screw in studs (Includes price of ARP studs) or, with pinning the studs be sufficiant for the 525 lift. I've pinned before and its not that hard but I dont know if I am pushing it. I dont want to invest a ton in this motor as we are always on the lookout for a 242 or 272 Formula.