Okay so just that I’m clear. I should keep carb vacuum hose disconnected and rev to 3000rpm. This should then be 32-36deg and after hooking up to distributor pot it should be 57deg at 3000rpm. What are those two terms called? I might have to search a video as I’m now confused.
Correct. You also need to plug off the hose going to the distributor while you're checking timing or it will leak vacuum and possibly throw off your measurements.