I've actually had several heads cut - up to .045 and never cut an intake or changed pushrods. Never had a issue either. These factory casted blocks and heads are all different from the factory, yet all got the same intake and pushrods. Remember, the factory tin head gaskets were even thinner than a .028 Mr Gasket.
Not that it's bad to check the intakes/push rods, but I wouldn't bother on anything .030 or less.
