New injectors and newer fuel distributor got it running very good but it revs slow and weak power below 2500rpm. We live in hill country so the hills are a challenge unless you stomp it an dget r's above 3000. Engine gets hot .. Changed the radiator but It still runs hot. Mostly when going up hills and running a/c. I believe the heat is due directly to the weak engine, not other way around.Any ideas?