Factory Exhaust Manifold....

[GBodyShop]

looking to block the factory emission tubes. Does anyone know the size of the plugs I would need?

 

[GBodyShop]

BUMP

 

[stuckincincy]

Should be a 5/16" inverted flare fitting. Most any NAPA type auto parts store should have plugs for them.

 

[Ribbedroof]

If you can't turn them, you can cut the tubing off and fill the hole in the plug with a MIG welder.

 

[GBodyShop]

thanks for the help