What engine did you have this on? Was it street driven? I am not familiar with the Bigs carbs, are they race only or can they be used for street use. I am assuming so as you stated that you have 500 miles on this carb. Thanks,
318 and then a 400hp 360. Bigs is just a carb customizer. It's not a race carb. I daily drove my car with this carb and yes only 500 miles on the carb.