Thanks for all the help, guys. In searching e-bay "262 ford", I'm seeing a lot of parts, Main bearings, rod bearings, gasket sets etc. that are listed as for the 223 or 262, and some for 215, 223, 240 or 262. From that I'm concluding that as Ford increased the size, they kept using as many of the same parts as possible. So, there ain't no easy way! I'm gonna have to either pull a plug, and fill the cylinder and measure the capacity, or take off the valve cover, and remove one of the headbolts, to see if they drilled it out bigger. At some point, in the future, I'll do that and replace some gaskets at the same time. Just hoped I could do it by the numbers, or the looks of the H20 pump. Apperently, No! Thanks again for the help. JIM