I have a 90 Tempo and the head gasket is blowen because of over heating. I haven't gotten into it yet and was wondering if it has an aluminum head on it or not. It does have an aluminum Valve cover but the head is hard to tell. I was hoping it had a cast iron head because I've always heard that if an engine with aluminum head over heats it will warp the head. I'm a newbie and any help would be great.