thank you for your reply's, but the problem is that when I get in the Highway the RPm are higher than what they should. It has a manual transmission. I change for a bigger radiator but no luck, after I get back home starts throwing up the coolant. I bought it in Ohio, it is stock with a cleveland motor. I have always thing that my transverse is making rpm go that high. It just seems that the higher MPH I go the higher rpm it gets. the thermostat does not show really over heat it is at middle reading. any feedback will appreciated. thanks