[just chevy]

the round drain plugs that go on the floor board and in the trunk. are they supposed to be sealed to the floor with some kind of sealer

 

[sshrop]

I am wondering the same thing. I was going to use seam sealer and just glue them in. If anyone has a better method let me know.

 

[mwb71nova]

Yes, just use a seam sealer. I cleaned them then used 3M Fast N Firm Sealer 08505 but you can use any type.

 

[jimys72]

Allways wondrered what they used for that. :attention:

 

[72novaproject]

The factory used an asphalt type sealer. Modern urethanes had not yet been invented.

 

[PCPete]

Not really drains

The holes were part of the forming and assembly process. More like locating holes. Yes, they are big, but that makes them actually easier to work with during sheet metal assembly and plug than smaller holes. Of course precision suffered...not that any of us doing some sheet metal work have noticed.

 

[thebugman]

i just replaced floor pans and trunk pan and i used the 3m seam sealer on the plugs. looks good after paint...

 

[72novaproject]

The story I always heard when I worked at dealerships was that those were drain holes. These cars were dipped in water tanks to apply the Electro Deposited Primer and the holes allowed the floor pans to drain.