insulation material under intake manifold and above gasket pan

[Freoway]

Hi, Just removed my cast iron intake manifold.  Probably never been off before.  Between the intake and the gasket pan, there was a thick piece of foil covered insulation material (possibly a glass wool of some kind).   Is this factory?   Can it still be purchased?

[Gold Rush]

Yes it is original and still available.  A few years ago I rebuilt my 400 CID engine and replaced the insulation.  I've searched my records and can't find the source though.  Sorry.. 

[Just 6T9 CHGR]

Performance Car Graphics makes it.   Pretty sure the company is back up and running ....


http://www.performancecargraphics.com/Manifold_Insulation.htm

[John_Kunkel]

It's not insulation, it's a silencer.

[Freoway]

Thanks for the heads up.  I'll run the car without it and see how it sounds before chasing any up.

[Back N Black]

Learn something new.

[kilrbee]

Does anyone know if a 69 Charger R/T with a 440 and A/C and the N97 noise reduction package would have used this silencer material under the intake?? TIA!

[John_Kunkel]

Yes, all '69 383's and 440's got the silencer regardless of any other packages.