I wouldn't think that small of a hole would have much if any effect on the fuel distribution. The DP4B's used to have a hole in the divider plate. I know because I ran a Holley three barrel on one back in the day. The rectangular hole or slot was necessary to clear the secondary throttle plate. It was not something I added, they were made that way.


'64 Sport Fury, 528 Hemi, FiTech EFI, 4-speed, 4.10 Dana 60
'57 Belvedere 2dr sedan, current project in process
'19 Cherokee Trail Hawk Elite
'03 Ram 2500 CTD HO, 6-speed 214,000 miles and still going strong