plugging air injector holes in heads

[fauxfour2]

Im switching motors and installing headers and was wondering if anyone knew what you had to do to plug up the air injector holes in the heads. Does anyone have a part number for plugs for that?

 

[fauxfour2]

don't know if it makes a difference but its a late 70's 403.

 

[fleming442]

TURNA has done it. I think they're 3/8 or 1/4' pipe plugs....

 

[TURNA]

Dorman part number 785-452 fit the 307 heads

 

[fleming442]

So, 5/16"....

 

[TURNA]

Yep but I dont think they are NPT