In '69,there were two different straight 6's available. Both the 250 and the 292,are still sought after,by some "rodders",and restorers. Depending on the amount of work needed to restore your engine's performance,(most all engine parts are still readily available through "jobbers",such as L.M.C.,and Jim Carter),and since most of your labor is "Free",it doesn't sound like you'll have much to invest. What shape is the head in? Carbon deposits,worn valve-guides,weak springs? The head should be chemically "Boiled" and magnafluxed,to check for cracks. It should also be checked with a straight-edge,to check for excessive warpage. When I had my head re-built,I had the shop install hardened "seats",to accept un-leaded gasoline,which,i believe was un-heard of back in'69. You may not make much of a profit from your engine once it's re-built,but you should be able to, at the VERY least,break-even. It all depends on how much work it'll take to make it RELIABLE. The more you put into it though,(Keep your documents)!,the more you can expect to get,price-wise. BUT,the BEST part,would be the feeling those boys would get,by bringing an old engine "back-to-life"! Now,that,in my opinion,is priceless! Hope this helps. Happy Holidays!!
