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

[Mr70]

Originally Posted by [email protected]

Is it possible to pour some filler, resin, glue etc. on the stampings and then restore the freeze plug? Try to fill the stampings in and then sand out?

Would think normal expansion & contraction of a freeze plug would foil this over time.

[enio45]

i would machine the plug - at least try......send me a few

[Edgemontvillage]

Originally Posted by enio45

i would machine the plug - at least try......send me a few

Thanks for the offer Eddie!

[Edgemontvillage]

I wasn't able to locate a new or suitable mint used expansion plug (1 1/4", steel, unplated, unstamped) so I contacted a small freeze plug stamping company who did a custom run for me. I have several.

New intake expansion plug stamping, 1 1/4" unplated steel, no mfg markings:


New Stamping vs Jobber zinc plated plug


Reverse side of factory original 472 manifold with expansion plug (unplated steel)

[Salvatore]

They look great.

[SuperNovaSS]

Well done. Now you can sell the extra plugs to the shop that restored your intake.


Jason

[Edgemontvillage]

Installed.

[enio45]

nice job!

[Lynn]

So... you gonna offer some of your extras for sale on this site?

[Zman1969]

Originally Posted by Lynn

So... you gonna offer some of your extras for sale on this site?

x2