360 engine

[69 fstback]

hey guys any one no what size threads are in the heads of a 76ish 360 for the emisiions ports under the exhaust ports thanks

 

[dodgetkboy78]

Mine were 1/8" im pretty sure.

 

[warwagons]

Double check before tapping...........1/4" npt allen head......or good ole JB Weld