Depending on engine combo you have, Heads and such, if this is a run of the mill 350, low Compression engine your best bet for more performance will be Cam & Lifters, Intake & carb on a totally stock motor, maybe 10-12, and my self I would much prefer the QJet carb. The HEI won't really help in adding HP but will help as far as better tunability, Junkyard Distributer should be around 35 - 58 bucks. If these are the stock low compression, everyday cast iron heads, look at a set of either GM Vortec or the GM Fast Burn heads, not real expensive $500 - $600 and these will help, should get a far better rush with these then intake and carb will. For a cam with a little more enthusiasm and keeping a relatively street driving capability try Comp Cams XE 256 or XE262 . Just a not on cam selection it is what you have for the rest of your combination that count on what cam you need. Flat tappet Cam & Lifter kit should think less than $150.
