My dad has told me many times that one day I will inairit his 69 400, but it has had one problem in particular, overheating. I have made many suggestions to him all of which he has already done or heard of that doesn't apply. I can narrow it down by saying the thermostat is applied correctly, the rubber pieces are correctly put on behind the water pump, the head gaskets are put on correctly and he has 50/50 mixture. He has also put an amazing aluminum radiator and has a new MSD distributor that we timed, yet I don't know if the, factory I believe, timing is right for it. One thing I heard is that a fan should be x close to a shroud which I don't think it qualifies for, but the car gets really hot (220+ in less than 20min at idle). I would also like to note my dad has tested all of these things and more at least 4-5+ years ago and some problems may have developed from others and such on. He seems to think it may be over bored but I think it may be extreme to want the engine out and any tips/suggestions would help. If any pictures or information is needed just ask, Thanks!

*Mass edit* I just got off the phone with my dad to which we had a long conversation about the car. The fan clutch is a small flex fan which only expands at certain RPM's which is why at idle the car heats up as fast as it does, but is something that has dropped the temp down when driving. About 6 years ago he had the heads rebuilt and changed to low compression instead of the high compression it had before. He seems to think maybe a bearing has been grounded down and is causing a lot of friction inside the block. The car was entered into car shows many times and taken on many long drives, but it ended around 2009-2010 when he got his job in Seattle. It was then that the car sat and had developed heating problems that wasn't normal and led to the car overheating. The car USED to run perfect(considering it ran about 220-230). If the engine is the ultimate problem, why would it take so long to get to that. As well as about 2 weeks ago, before he came to visit, I decided to start it up and when revved, orangy-brown liquid shot out(head gasket problem duh....or was it?) and I decided to wait until he came to start and see for himself. When he started it to get it out of the garage so I could do the idler arm and it did not shoot out. Even to a few days ago to see if at high RPM's it didn't shoot out, only gas because it runs rich(could that significantly raise the temp?)