if you know what you are doing, you wouldnt suggest someone with stock intake ever put a random cam in as their next mod.
I think you have a moral obligation to someone to recommend the correct next step as apposed to just taking business because it will bring you business.
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Stock intake,all runners have been enlarged,aswell as the the throttle body area has been enlarged to 68 mm from 58 mm,and the E7's has had all the intake runners enlarged to match the lower intake manifold that has also had the runners enlarged,and the heads have a stage 2 port. the heads have GT-40 stainless steel valves with 600 lift springs,and the exhaust ports have been enlarged with the humps removed. And they have also been milled 30 thousanths to increase compression...
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ok, honestly... your intake sucks. you can port and chop and sheet metal all you want and it will still suck. If you put in the stock cam with 1.7s, you can have a torque lil bastard.
who did the heads? do you have actual information to give to a cam grinder? If you are sticking with your intake... give buddy rawls rick anderson or ed curtis a call. wait a month or so for the extra money and get a real cam.
Your best bet will be to get a regular performer or a gt40 family intake, and then get someone to spec you out a cam for your heads.
the difference is, you could slap a trick flow or alphabet cam in your current setup and have a mismatch that makes 255/290 or you could do everything right and make 285+/310+ with the right matching stuff
stage 2 is pretty vague though with e7s. who did the work? are they the ebay ported e7s?