Home Porting the Holley Carb!?....
Uh... NO!
I did this to a few carbs back in the day and it did improve performance. The increased airflow will require a little jet adjustment. The main thing is to make sure your main body surfaces are flat. That has been the biggest issue with Holley carbs for me. I have had to file almost every one to get rid of the low spots around the power valve cave. A body file is perfect for truing up a Holley. The same type file may also be found in a feed store as they are used on horses hoofs.
Uh... NO!
I did this to a few carbs back in the day and it did improve performance. The increased airflow will require a little jet adjustment. The main thing is to make sure your main body surfaces are flat. That has been the biggest issue with Holley carbs for me. I have had to file almost every one to get rid of the low spots around the power valve cave. A body file is perfect for truing up a Holley. The same type file may also be found in a feed store as they are used on horses hoofs.