I have a 1956 Super Buick with a bad CAM have not had the car but only a year, do not know to much about it pretty sure it is a nail head but none of the codes on this site match up, the code on the side of my block is I9469845 if anyone could help me out with my problem I would be greatful, really like driving this car hard to see it sitting inside when it's so nice outside thanks!!