Hey gang. I 've been having troubles with my cooling system. No leaks, but water temp rises fast when on hwy. Never gets to overheating point but comes very close to it. Especially when I run my ac. New thermostat(autozone) fresh complete engine rebuild around 5k on engine. Seems like there is a lot of pressure on upper radiator hose... any ideas where to start? I was thinking maybe I need to relocate overflow and put twin fans on.... heads cam intake have been upgraded, if that means anything. Oh and it's a 94 gt