Well, I see this as an expectation issue too, motomike. You are looking at a project which will take several years to resolve - AFTER a whole bunch of work. That is something that you should keep in your mind as you move forward.
The soil will need to be amended as everyone else has mentioned. It will need organic material, and it will also need sand. Depending on the current composition of what you have, you might need LARGE amounts of those things. And you might need to do that for several years. If you find out that you need to add 25% volume organic material this year, and then 25% organic material next year also, you might be looking at a huge amount of material that might not be readily available.
A second thing to consider is the amount of improvement that you will actually be able to achieve over time. When you till organic material into clay soil, the improvements will not go any lower into the ground other than how deep you till. If there is clay below that level, it won't magically transform into sandy loam. Whatever you grow in that field will find that clay, if their roots grow that deep. Some plants will complain once they meet the clay. Other plants will 'avoid the issue' by having the roots spread above the clay line. Other plants will have their roots bore through the clay just fine. Depends on the plant.
So just in terms of figuring out how much time and materials and effort will go into this, you might want to think about these aspects. Not sure if you have any other options.
Good luck!