Nailhead carb size.......
Andy,,,, I have run the stock afb which is about 550 cfm, I have run the holly 600 cfm... 670cfm ,, 950 cfm 3 barrel, 1050 3 barrel..... my nailheads did not have any trouble handeling any of them.... the factory dual quad set up flows about 1200 cfm total...
the most...