Looking for advice/insight on car

It was happiest leaving the line around 1500 rpm, anything high and it would be slower honestly my 60 ft would go up to 2.1-2.2, as for shifting I'd shift at 5700 and through the traps at 5800-6000. Mancini lists it at 3500 stall. And I honestly don't know if it was slipping, I don't know what that feels like.