1980 720 4x4 with 3 bolt thermostat housing

[Huntin720]

Is this common? No one seems to have the right gasket for it and they argue with me that I must not be counting the bolts right. I'll post a pic when I get a chance but do I maybe have parts from a different model?

 

[that-son]

you mean like this?

 

http://www.rockauto.com/getimage/getimage.php?imagekey=478355&imageurl=http%3A//www.beckcatalog.com/bin/images/Beckarnley/039/BA0390036-1.jpg

 

BECK/ARNLEY Part # 0390036   
Thermostat Gasket; 3 Bolt Hole Housing

[JoeCool]

You don't need a gasket, at least not the crappy leak prone paper! Use black RTV, it is all I have ever used on thermostats unless it came with a rubber O-ring. And I have worked on cars for 16 years.

[Huntin720]

Yeah that's the gasket. I know I can order it. I just was surprised that no local auto parts stores had one or believed me that it's the one I needed.

[datzenmike]

They were on late 70s L20Bs and Z cars. The '79 200sx has them I believe.

[Huntin720]

So datzenmike does that mean that mine isn't original to the truck? Maybe the cylinder head is off of an older truck or 200sx?

[datsunaholic]

They were pretty much used on 79-80 L20Bs and 79+ L24/L28s.  So no, yours is probably original.  I've had a couple late-late L20Bs (either 1980 ones form 720s or "crate" replacement engines, I call them the W-code block but basically they're a Z20S casting with the L20B machining) and most had the 3-bolt housing, whereas all the verifiable 78 and older ones had 2-bolt.

[wayno]

Great answer/info, you covered all the bases.  :thumbup:

They were pretty much used on 79-80 L20Bs and 79+ L24/L28s.  So no, yours is probably original.  I've had a couple late-late L20Bs (either 1980 ones form 720s or "crate" replacement engines, I call them the W-code block but basically they're a Z20S casting with the L20B machining) and most had the 3-bolt housing, whereas all the verifiable 78 and older ones had 2-bolt.