What should the timing be set at? I tried TDC and it hesitates, so then I raided it up to about 6 above and it seems to be running better, but I don't know what it should be set at exactly. What are your thoughts? Any opinions appreciated.

 

What year and which 6 cyclinder also does it have emissions and what transmission. I have a 1966 motor manual with all the tune up specs.