Head Gasket Preference

My son's 4.7L V8 uses MLS gaskets as standard/stock. It may be more of a cost issue for standard production.

We used 4.125 hole Cometics on a 340 with a 4.060" bore. The 4.080" size was tempting, but any misregistration of the gasket holes vs the bore holes exceeding .010" would have left the gasket edge over the open bore.