I think Summit and some other hot rod outfits sell a repair fitting just for that. It cuts its own threads and is a little oversized to get a good fit. I can't promise they have it for a 4-jet,but I've bought 'em for Hollleys before,so there's a good chance they have 'em for others..
Speed


1954 GMC 350
1957 GMC 1/2 ton
1962 Chevy C-30
1952 Chevy 6400 dump bed project truck
'98 Harley FLSTC
'66 Pontiac Catalina
'76 Chevy 1 ton Duallie
'84 Bronco II
'78 Dodge W-200
'81 Toyota 4X4 truck