Ok well we know have oil pressure... But now there seems to be a tapping sound coming from beneath the valve cover. The rockers never were adjusted after the engine was built/ But I thought you didnt have to with hydraulic ones? Anywho I think it might be from running it with no oil pressure. Also the brakes seem to be super hard and not have any power assist as well. We seem to have enough vac but I will re check it. We have a very large cam in there so... Anyhow any advice on this would be great before I move any further.