273 Ignition timing with a cam

Use the search function here to find lots of threads about distributor advance and tuning. I tuned my distributor a few years after I rebuilt my 273 and it made a bigger difference in performance than anything I did. I run 12° initial (because it likes it there), 34° total with one light spring and the original light spring for advance. I took the distributor apart and lengthened the advance slots to get the advance I needed. tmm