Where to find complete Heater Duct replacement

[SonomaComa]

I have a 1970 GMC C-20 without A/C. I have all new replacement parts for the heater system. Everything except the Duct work. I purchased them at Classic Industries. They offer 2 out of 3 parts for the Duct work. They have the Outer Heater Box from inside the Engine Compartment Part #17183 and the Air Selector Duct Assembly Part #G2776. But I can't find the piece that attaches from inside the cab to the Firewall. They only offer something called the Heater Box "S" Plenum (#AP7221) which looks nothing like what is in the truck. Listed here... http://www.classicindustries.com/sho...c-heater/?&p=9

I am looking for these 3 pieces. The very bottom piece separates into 2 pieces.

[F.A.A.benny]

The metal duct at the end isn't reproduced, I believe. I haven't seen it in any catalog

[Grumpy old man]

I have a few , EXACTLY which piece do you need ?

[SonomaComa]

In the picture that I posted, it would be a piece from the bottom. The right hand side of the bottom piece. I still have mine but was going to replace all the parts listed in the picture.
I listed the parts that are available by Part Numer listed in Classic Industries catalog.

[Grumpy old man]

Member DaHos has a few listed already in the parts section and his prices are cheap see if this link works


http://67-72chevytrucks.com/vboard/s...d.php?t=687442

[SonomaComa]

Originally Posted by F.A.A.benny

The metal duct at the end isn't reproduced, I believe. I haven't seen it in any catalog

Great, just my luck. Why is only 2 out of 3 parts of the Duct Work available?

[Grumpy old man]

Originally Posted by SonomaComa

In the picture that I posted, it would be a piece from the bottom. The right hand side of the bottom piece. I still have mine but was going to replace all the parts listed in the picture.
I listed the parts that are available by Part Numer listed in Classic Industries catalog.

Let me understand ,You have all the parts ? you just want to replace them with shiny tiawanese reproductions instead of restoring what you already have ???

[SonomaComa]

Originally Posted by Grumpy old man

Let me understand ,You have all the parts ? you just want to replace them with shiny tiawanese reproductions instead of restoring what you already have ???

No reproduction parts built here in the U.S. ?
It looks like mine has been kicked a few times and dented up. I was hoping to find a new one to bolt on. Mine will take some time to rebuild and straighten out. All the doors and flaps don't work all that well right now.

[F.A.A.benny]

This is how I restore them. I take them apart, bead blast, paint and I replate the door and the rod. Also install new foam. They are the same for both ac and non ac trucks but they aren't reproduced.

[SonomaComa]

Originally Posted by F.A.A.benny

This is how I restore them. I take them apart, bead blast, paint and I replate the door and the rod. Also install new foam. They are the same for both ac and non ac trucks but they aren't reproduced.

You replace the door and rod?
Where do you get them?

[F.A.A.benny]

I didn't replace them. I removed them. Then I replated them, replaced the foam and reinstalled them.

[SonomaComa]

They look awesome!

[F.A.A.benny]

I can do another duct like that one for you if youre interested. I have several spares.

[SonomaComa]

Originally Posted by F.A.A.benny

I can do another duct like that one for you if youre interested. I have several spares.

How much? I do not have A/C. Mine is kinda dented and don't look that good and does not have the new rubber on any of the doors or flaps.
On a heater system without A/C is a Heater Control Valve necessary? How do you stop the water from flowing through the heater core?
An don the heater core, which gets mounted on the top, the 5/8" or 3/4" pipe?