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 ...

If you're a classic Mustang veteran, you've seen your share of carburetor swaps. Over the years, many original Autolite 4100 and 4300 carburetors have been replaced by any number of aftermarket carbs, ...