Total advance question

Regardless of specs (and they ARE distributor degrees) the total WITHOUT vacuum should be no where near what you are showing:

Unhook vacuum!!!!

Should be no more than 40max depending on "build" and that is likely high nowadays

If dist. is an exchange / rebuild it could have more modern BS smog advance and will have a long slow mechanical advance.

If you light is a "dial up" deal SUSPECT the timing light. I've run across those that are wrong. Find a "plain" non delay timing light to check

Ok I unhooked the vacuum and got the engine up to 2300rpm and I was reading 38 degrees advance. Wonder what the specs are on this distributor for mechanical and vacuum advance since it's not the stock one.