I am here again for some expert advice.. Have a 65 289 vert that ran perfect all last year. Last winter I pulled the engine, detailed the engine compartment and replaced all of the gaskets in the engine - including head gaskets. I also replaced the water pump with a re-man pump. car is back together and running smooth, butafter 5 miles or so of driving she gets hot and pukes at the overflow - I replaced the t-stat today but she is still getting hot. I read somewhere before that installing head gaskets backwards was a common mistake - I can't believe I did this cause I clearly remember them being marked FRONT. Also, the water pump that came off the car was an original 65 aluminum pump with the open impeller. I got a rebuilt 65 pump, aluminum with an open impeller as well. Now I have this overheating problem. I am going to first replace the water pump, but what are the signs of backwards head gaskets? My oil is fine, no coolant in there. Thanks in advance for your help!