So I decided I’d change the cap, rotor, and wires on my 383 70 RR and realized that they were longer wires than normal. After looking around I figured out that they are the correct firing order but just starts two indexes on the cap from normal. The car was upgraded at some point to electronic ignition and actually runs and starts very well. I have not checked timing or tdc on cylinder 1 yet but wonder if during the rebuild something got out of whack. Thoughts?