Just purchased a 87 Minnie that the previous owner had a New Holley 4 bbl recently put on, went to get the rig smogged and the tech said it was running too rich and it didn't pass. When he did the H...
Probably not. It sounds like it needs re-jetting which is a daunting process for the person not accustomed to doing it and a time consuming one for those that are experienced. If just adjusting the A/F screws wont fix the one you have, you might consider getting a rebuilt replacement carb for your exact application.