Comparables
Joe:
Thanks for the input. I will assume this has the 333 truck head castings, and comes without an intake or a distributor. And that the pistons were cast pistons. It would be interesting to know which pistons, and what sort of valves were used, along with bearings, etc. Let's assume good brand name stuff.
You can start with the "core cost" of those parts, then add in the machine shop costs for boring, fitting and assembling, then again for the new parts. I am assuming that you had this done, so you would know the costs. My guess is your value lies somewhere in that range.
You might begin your comparison with similar builds that might be available via a sales source such as Ebay. Generally we see engines with some degree of completeness, but often needing a total rebuild. You can start there and add in your costs, then take away a bit for wear and tear. Somebody purchasing your engine will also have to factor in the cost to transport it.
Just out of curiosity, you note that you have located the "numbers matching" engine for your '63. There must be a story behind that one, we'd love hear it!
Best,
TomK