Gary's correct on fuel/octane. My father rebuilt the 302 in 1990 and had hardened valve seats installed when they went through the heads. Did some duty in the Anglia when it was in street form and ran great on Premium pump. Problem is with these pre cat engines is they need lead for lubrication. (heads) I know there are additives on the market ,someone can chime in for recommendations. My 12.5:1 engine needed higher octane to prevent pre ignition (pinging), and we run 116 in the 14.75:1 motor. 1/2 gallon a pass ! Congrats on your progress ,know you have that warm feeling of pride. If you ever rebuild an engine ,follow those same procedures for initial start up. Upon break in, you do not want continued roll over....problems. Stop and re-evaluate.
I do love the smell of race fuel ,but it comes with a high price tag !