have a 1968 Camaro. was a small block car. did a big block swap. and running into a few cooling issues. when the cars running *moving around at decent speed -30mph+* if it sits and idels or even on any sorta nice hot day she wont stay cool. it dosent boil over by any means but it pukes out the over flow. any ideas? or reccomendations on some good electric fans/ rad combo