vortec head help

[syclone0209]

What do most people use to seal the old manifold bolt holes that go into the water jacket. allen head bolts or some kind of plug?

thanks

 

[NecroWolf]

Re: vortec head help

i cut the intake bolts and screwed them in flush or more and filled them with jb weld

 

[berzerker]

Re: vortec head help

good old jb weld works .

 

[Tooky]

Re: vortec head help

I used an allen head set screw. I want to say it was 5/16" but can't remember. Use thread sealer and you only need to do the ones on each outside corner (total of 4).

 

[ghettosled]

Re: vortec head help

I used an allen head set screw. I want to say it was 5/16" but can't remember. Use thread sealer and you only need to do the ones on each outside corner (total of 4).

this is correct. 5/16-18 If using a 1203 gasket you only need to do the corners, some other gaskets expose the centers as well, in which case you would need to plug them..