No, the 3.0 is an industrial motor used in marine applications, however the 2.5 (153) was. do not confuse it with the 151 pontiac motor as they are not the same. have skippy behind the counter look up valve cover gaskets for a 1963 Chevrolet Chevy II. they will most likely not have them in stock. or simply go to your local NAPA and have them cross-reference as NAPA caries the sierra line. your local west marine would also have stock. Felpro gasket if you can get it, Mahle is fine to
