So I have 3 pages I am in the process of setting up now that I need to add to 60 other WP sites that all use the same theme with the only difference being the header. If I add the pages to one theme and than download the corrected theme delete the header and upload it to another WP site does it copy the pages or no? If not is there an easy way to copy pages from one WP build to another without manually making the pages?
Posts and pages are stored in the database.You can use wordpress importer (dashboard-tools) to export and import posts and pages.
The theme controls the look and appearance of your blog. Everything else is stored in the database, and yes that includes posts/pages.
I personally use backupbuddy to back up my content and restore elsewhere, but the only thing is that I have to install the plug-in on the ones I am restoring to and upload the backup. which does not take long in any case, especially if it is just the content itself, and change the header within the site.