1969 Z/28 Camaro "472" Intake Manifold Expansion Plug

[Edgemontvillage]

that looks good. WTG seeing this project through. Sometimes it the little things that get ya...

Thanks. Painstaking but worth sweating the details.

[Edgemontvillage]

Correct plug installed

 

[1968RSZ28]

Looking good!

Paul

[Dave69x33]

Lloyd,

Just ran across this topic and interested in one of your unmarked plugs is you still have any spares.  I am planning to restore a replacement "472" intake for my '69Z and the only details needed are this press in plug and the pipe plug that has a square pocket design for the drive in tool.

Thanks,

Dave

[Edgemontvillage]

Hi Dave, I have a few available, sent you a PM.

Lloyd.

[Dave69x33]

Lloyd,

How did you remove and install the new freeze plug?  With heat, special press tool?

Did you or the one who restored your intake remove the (2) pipe plugs and the heater core hose fitting?

Jerry MacNeish restored one of my 472 intakes. It appears he left the freeze plug in the manifold when it was “reskinned” or bead blasted as the freeze plug has the appearance of being blasted.

Thanks,
Dave

[Edgemontvillage]

Dave, to install the intake plug I tap it in using a mallet and a socket (upside down) on the lip of the plug. Once it’s flush to the intake then I use a smaller socket to set it about 1/8” below flush. They are a tight fit but don’t require a press to install. If the plug is really tight I ease the aluminum with sandpaper or I’ll leave the plug in the freezer overnight to shrink it. When I restore an intake I use dry media, vapour blasting and ceramic tumbling for the best result. I always remove all the fittings and re-plate them as well I remove the underside heat shield.