1967 Heater Box

[Jeremy H.]

On a 67 non A/C car is the outer heater box secured by speednuts that are silver or black?

Thanks

Jeremy Hedges
#31711

[Mike M.]

Re: 1967 Heater Box

Hi Jeremy
The original speednuts were black phos (or dark gray)
HaND

[Jeremy H.]

Re: 1967 Heater Box

thanks for your help

[Mike M.]

Re: 1967 Heater Box

You're welcome!

[Mike M.]

Re: 1967 Heater Box

Oh, and don't forget the "Goop".
HaND

[Andrew P.]

Re: 1967 Heater Box

Yessss.... So exactly what is that GOOP? I need to seal mine soon....

[Mike M.]

Re: 1967 Heater Box

It was an asphaltic material, like undercoating, thinly sprayed along the seams of the box to the firewall as a seal to keep the engine fumes from entering the passenger compartment.
Typically, applied rather sloppily with runs.
Definitely not pressed-in like caulking.
Occasionally, we have seen a few cars with a really tight fit in that area without the sealer, or maybe it was just an oversight.
HaND

[John H.]

Re: 1967 Heater Box

That was a water test repair sealer - same stuff used in later years on grommets; it wasn't specified as part of the heater blower box installation, but was obviously used on-and-off as a preventive measure.

[Rick S.]

Re: 1967 Heater Box

Andrew,
Here is a shot of my Goop.
Rick