firewall insulation question

[shoooter]

I ordered a firewall insulation kit for a 71 cuda with air and it came with push christmas tree type fasteners do I use those or the firewall nails? I ordered both.

Also does anyone have a picture cause I can't seem to figure out how they all go. Does the piece behind the heater box get glued? Does the under dash insulation get glued aswell?.

[anlauto]

Throw away the Christmas tree plugs and use the nails. For A/C I believe one piece does glue to the box itself and yes the upper dash insulation gets glued on.

[dpcd67]

Under dash is glued; originally it was cheap blanket material. Firewall pad is a piece of cardboard with fiberglass like insulation glued to it and that is held on the firewall with the plastic pins. I used new sponge carpet pad glued to the top and dynamat on the firewall.  With an OEM type of cardboard pad on that, which was probably not necessary but I couldn't help it.

[shoooter]

I put sound deadened on the firewall Would you still use the firewall insulation?  Also what type of glue do you use?

[shoooter]

Also what type of glue do you use for weather stripping?

[roadman5312]

Also what type of glue do you use for weather stripping?

                 3M weatherstrip cement.

[HP_Cuda]

I used the 3M 90 so you know down the road it will still have adhesion. The 77 will deteriorate over time.

[dpcd67]

For pad insulation I use 3M Spray adhesive (orange can), also for carpet. If you use Dynamat type stuff on the firewall then you don't need the cardboard/fiberglas piece too. But I put it on just in case.... It is quiet but the cardboard probably didn't help.  For weatherstripping I use 3M; I can't find the tube right now. But it is very strong stuff.