Metal Filler for Throttle Body?
Many people will shun you away from using it because it can break apart/dislodge from your TB and wind up in your intake.
There's also no proven gain using the filler over not using the filler.
However, many people have been running it for years with no problems.
It should hold fine if it's applied correctly.
Trending Topics
https://ls1tech.com/forums/generation-iii-external-engine/553507-don-t-ever-epoxy-throttle-body-iat-air-holes.html
....but proceed if you'd like!
The Best V8 Stories One Small Block at Time


