could you install a fuel pressure gauge maybe the fuel pump is bad
dry rotted vac lines? are you getting good vacume? sounds like your haveing high rpm issuesmake sure on rev your getting good vacume and good fuel.it could be a bunch little things look into your vacume gas pressure/quality/i would start off buy putting some fuel cleaner in the system and check and clean the IAC (idle air controller) with some carb cleaner while the throttle body is off
are there any codes