Replacing Radiator Core Support

[Ronno6]

Has anyone out there replaced the riveted-on radiator core support brackets found on the 81-87 pickups?
Dunno if they were always riveted on, but mine are.
Did you drill the rivets out, or grind then off...or sawzall them ??

If you drill them, what size bit?
How hard are the rivets?

Good ol' battery acid has eaten up mine on the right side..............

Corrected: the part I refer to is the bracket riveted to the frame to which the core support
is bolted with the rubber bushings.

 

[Westislander]

I center punched the rivet then drilled down to about frame depth with about a 7/16th bit. Hit it with a air hammer or cold chisel and the rivet heads pop right off

 

[Ronno6]

I center punched the rivet then drilled down to about frame depth with about a 7/16th bit. Hit it with a air hammer or cold chisel and the rivet heads pop right off

Excellent!
THAT'S about the kind of info I was seeking!

Thank you.............