Gasket sets. Pre 1985 and later than 1985?

Why are you using early heads on a roller cam block? Are you using a roller cam? Roller cam heads have .660 inch pushrod holes, where as the early heads only have .500 inch pushrod holes. If you use a roller cam, your pushrods will bind in the pushrod holes. If you are using a flet tappet cam-you are good to go. I would sure take advantage of the roller block by using a roller cam, don't have to worry about the dreaded cam break-in.