73 scamp

Oh, a newbe,lol; well then easy on the timing until you learn how to limit the power timing.Most SBMs with oem heads and compression don't like more than 36* at WOT, and after about 3200rpm at the earliest. Any more than 36 or any earlier than 3200 will usually cause detonation, which must be avoided at all costs, on account of detonation can destroy your engine. So learn to recognize detonation when it occurs,and learn how to limit the power-timing,and stay out of the secondaries until you do.
Otherwise; nice ride,enjoy