You need to put a gauge on that thing like these guys have said, knowing your cam specs its pretty easy to get a solid ballpark of static compression at that point. The fact he said it had trw forged pistons isn't a great thing. The only production trw for a 360 was a stock replacement style with no compression height and a bit of a dish, the last 360 I had with trws the pistons were .100 or so in the hole and needed thin mr gasket head gaskets and 64cc chamber to get 8.8 compression. If you use the hughes cam you will need better springs and get the installed height right and that means pulling the heads and machine work. I agree with those that said run it or if you really want to make some changes be ready to rebuild it completely. Once you open that can of worms there is no going back. Somebody designed that thing the way it is and imo they did a decent job, but to change one or two parts you wont really gain anything significant until you redesign the whole dam thing.
