67 GT500 Thermostat housing

[shelbydoug]

Not on a 67 or later manifold. That is for the large diameter thermostat.

[Vcode]

Not on a 67 or later manifold. That is for the large diameter thermostat.

oh - your right you need the smaller hole size.
Sorry.

[Bob Gaines]

To those reading, the C5 larger thermostat housing (ebay link) without the vacuum tree fitting when compared to the C7 housing (Mansfield link) is different in appearance .  The C5 housing is very common and is what typically gets used on a 67 GT500. It becomes very obvious which one you have once you know (by comparing the two) what the differences are.

[1967 eight barrel]

Doug, I have a modified Ford C8 casting that was without the vacuum port threading I modified for use on my Shelby. I found an original, and removed it from my vehicle if interested. I even went to the trouble of mimicking the cast texture where it was ground off. There is no internal "dimple". So there is no chance of failure due to thin material. PM me if you're interested.

                                                                              -Keith

[shelbydoug]

Doug, I have a modified Ford C8 casting that was without the vacuum port threading I modified for use on my Shelby. I found an original so It was never used if interested. I even went to the trouble of mimicking the cast texture where it was ground off. There is no internal "dimple". So there is no chance of failure due to thin material. PM me if you're interested.

                                                                              -Keith

Do you have some pictures?

[Vcode]

Not on a 67 or later manifold. That is for the large diameter thermostat.

just saw this on Ebay

https://www.ebay.com/itm/1967-FORD-MUSTANG-WATER-NECK-THERMOSTAT-HOUSING-390-428-ALUMINUM-C7AE-8592-A/292958943588?epid=658152049&hash=item4435b6b964:g:zNsAAOSwc9ha-zon:rk:1:pf:1&vxp=mtr&frcectupt=true

[shelbydoug]

Not on a 67 or later manifold. That is for the large diameter thermostat.

just saw this on Ebay

https://www.ebay.com/itm/1967-FORD-MUSTANG-WATER-NECK-THERMOSTAT-HOUSING-390-428-ALUMINUM-C7AE-8592-A/292958943588?epid=658152049&hash=item4435b6b964:g:zNsAAOSwc9ha-zon:rk:1:pf:1&vxp=mtr&frcectupt=true

That's the Scott Drake version which is not accurate at all, but thanks Vcode.

The originals look like this.

Now here's the thing, not only were there seemingly like 100 of these things made, they are date coded! So you want one that is something like 2, 3 or 4 weeks before the Ford build date. This may be THE most difficult part to find for a 67 GT500 ? You can get one but you have to buy the entire car to get it.

I need one that is dated May 1967. I can't even find one made in 1967. So far they are all November 1966. So "good luck" on YOUR search!

To think how many got tossed because when the thermostat got changed out, someone cracked the dam thing? 

I don't think they were ever serviced by Ford. What you got was the '68 version with a plug in it.

[shelbydoug]

This is the Scott Drake part.

[1967 eight barrel]

I have a factory 68 on style that wasn't tapped that I reworked and then restored the cast texture if anyone is in need.  I used it until I stumbled on a NOS housing about three years ago.
                                                                -Keith

[1967 eight barrel]

Saw this on Ebay - Will this work?
It a C5 housing.

https://www.ebay.com/itm/1965-1966-Ford-Galaxie-Fairlane-Mercury-ORIG-FE-390-410-428-THERMOSTAT-HOUSING/162968617497?epid=6006353255&hash=item25f1afc219:g:ItkAAOSwk~NZ07sm&vxp=mtr

No, the C5 housing is the large thermostat. The C5 and C8 housing are in abundance. Good luck fining one in useable condition. I looked for years. I was talking to Bob at Mansfield Mustang. He hasn't had a C7 housing in years. You don't even stumble on them at part swap meets anymore. They are a 1 year housing. If you are converting a C8 housing you need to find one that was not tapped. They are hollow on the outside. They still take hours to convert. I used a nail and a jewelers hammer to put the casting texture back into the aluminum housing.
                                                                                                  -Keith

[shelbydoug]

Saw this on Ebay - Will this work?
It a C5 housing.

https://www.ebay.com/itm/1965-1966-Ford-Galaxie-Fairlane-Mercury-ORIG-FE-390-410-428-THERMOSTAT-HOUSING/162968617497?epid=6006353255&hash=item25f1afc219:g:ItkAAOSwk~NZ07sm&vxp=mtr

No, the C5 housing is the large thermostat. The C5 and C8 housing are in abundance. Good luck fining one in usuable condition. I looked for years. I was talking to Bob at Mansfield Mustnag. He hasn't had a housing in years. You don't even stumble on them at part swap meets anymore. They are a 1 year housing. If you are converting a C8 housing you need to find one that was not tapped. They are hollow on the outside. They still take hours to convert. I used a nail and a jewelers hammer to put the casting texture back into the aluminum housing.
                                                                                                  -Keith

You need to make an instructional video. Your procedure may be my best hope?

[1967 eight barrel]

Doug, I still have the one I converted in my spares. I will take pictures and I will offer it for sale here. 

                                                                                              -Keith

[shelbydoug]

Doug, I still have the one I converted in my spares. I will take pictures and I will offer it for sale here. 

                                                                                              -Keith

Sure. What does it look like? I bought one to do exactly what you did. You might save me the effort.

The thing about these housings, when the hose is on it, the hose covers the C7 part.

[1967 eight barrel]

You could probably bead blast it. When you paint it blue it probably wouldn't show.

[shelbydoug]

You could probably bead blast it. When you paint it blue it probably wouldn't show.

Necessity is the mother of invention.