I have question hopefully somebody can help me out. I have a 1972 Grand Sport with a 455 engine. What is the normal operatirng temp for this year Buick ? I have two electric cooling fans that I operate manually. I want to install an auto set up for the fans, but I dont know what temp to have them come on and what temp to have them shut off. And if I install an auto fan set up, is there something I can use so if I go inside the store and the fans remain on they will not drain my battery when I come back out. Any advice would be greatly appreciated Thanks.