"What's that?" you ask. "Vacuum secondaries on a full-sized race carb?" Is it heresy, or might there just be a method to the madness? We know that vacuum secondaries are a feature designed and aimed ...

Could you please tell me if the Holley carb in these photos has mechanical or vacuum secondaries? I don't know much about these things. No time like the present to learn, Arron. If, as per your photos ...