67 273 Timing

My 2 bbl 273 set at 6 BTDC. The spec, IIRC, is 5 +/- 2 degrees BTDC. Try 5 and 7, see if you can tell a difference, pick what suits you. I tried 12 BTDC, but that was too much advance at higher rpm..

I have a Mopar Performance electronic ignition on mine.