How many miles on the engine?
Go down to the local workshop and get them to check the radiator for hydrocarbons..takes 5 mins and most do it for free.
Mark the spark plugs in the engine so when you plull them out u know which way the sat in the head....black on the top valve guides, black on the bottom rings, and if 1 is very clean compared to the others, suspect head gasket on the cylinder.
While running, pull the oil filler cap off, put your hand over, you should feel a little pressure /pulse, but if quite a bit rings
When the car sits over night or for a reasonable period during the day, then fire up, have someone check there is not a big puff of smoke come out then clear...valve guides.
The car starts and idles fine, 850 rpm idle w/ 28 degree advance
With that sort of redulous advance on a street car , you Emissions...NOx etc are going to be real high, and firing before the piston gets to the top loading the engine at idle and cruising insosently down the highway.....slow death of an engine....if you have modern heads on , more efficent burn in chambers th death will be a little advanced...if compression is tweeaked up, then even faster still.
And it will not be long before the starter motor stops working when the engine is hot because it loads the armiture way too hot, and causes dry joints in it...