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-   -   Thermostat housing / water outlet (https://6066gmcclub.com/showthread.php?t=51579)

Sabesimpson May 2nd, 2023 12:06 AM

Thermostat housing / water outlet
 
Hi all!
So I’ve tried everything to get this housing. Tried all the parts stores, even ordered the “77-81 trans-am 4.9L” housing.
Anyone here have a good part number?
This $20 part is the hold up.

Every one I got the bolt pattern was to wide.

Thanks for the help!!

BobBray May 4th, 2023 07:39 PM

Re: Thermostat housing / water outlet
 
The Pontiac housing fits 351's with the thermostat on the front of the water crossover. A 1965 should have a crossover with the thermostat on top. Does your truck use a thermostat housing with a vertical outlet or a horizontal outlet?

jerrspud May 4th, 2023 10:13 PM

Re: Thermostat housing / water outlet
 
oh dang. So a normal SBC water outlet doesn't fit?

Sabesimpson May 5th, 2023 01:32 PM

Re: Thermostat housing / water outlet
 
4 Attachment(s)
Correct it is aluminum horizontal

Sabesimpson May 5th, 2023 01:37 PM

Re: Thermostat housing / water outlet
 
Small block Chevy does not fit it is to large. Bolt pattern is off by about 1/4” on each. And the gasket is to large to hold the t-stat in place.

James May 5th, 2023 01:57 PM

Re: Thermostat housing / water outlet
 
2 Attachment(s)
I had the same problem with my thermostat housing. I had repaired it with Devcon 10760 Gray Titanium Putty, 1 lb. Can. Be sure to bead blast the housing before using it. It is the most chemical and temperature resistance version they make.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

I just realized the price of that stuff really went up.

I included a before and after pictures of my housing.

BobBray May 5th, 2023 05:23 PM

Re: Thermostat housing / water outlet
 
Can you tell me what the distance is between the bolts? Center to center.

James May 5th, 2023 05:31 PM

Re: Thermostat housing / water outlet
 
Quote:

Originally Posted by bobbray (Post 77088)
can you tell me what the distance is between the bolts? Center to center.

3" c-c.

BobBray May 5th, 2023 09:30 PM

Re: Thermostat housing / water outlet
 
I found this one for an older Pontiac, but the outlet is more vertical:

https://www.rockauto.com/en/moreinfo...10337&jsn=1638

Sabesimpson May 6th, 2023 01:58 PM

Re: Thermostat housing / water outlet
 
Correct 3” on center


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