Thermostat housing

[77vette]

Well, I finally got the thermostat housing that I ordered, but it is different than the one that's in the car. This one has 2 holes at the top plus the opening for the top radiator hose. I assume one of the holes is for the EFE vacuum fitting, but I have no idea what the other is for. The 2nd hole is a little larger than the EFE hole and is threaded. I guess I could cap it and use it anyway. The tag on the housing says, "Thermo Housing,74-81. Mine is a '77 vette.....Any suggestions....:confused

 

[ssvett]

77, Where did you order it from, is it new are used? I have a 74 and I don't remember all them holes(I'll have to take a look after while) But unless you need all them holes, I would not use it, mainly for looks. I really don't like looking down and seeing a pretty motor, and then see things that are blocked off, or plugged up.............Steve

 

[77vette]

Steve, I ordered it from Zip Products in Mechanichsville, VA. I've put a call into them. I can still use the old one. I'm replacing the thermostat and EFE vacuum...If they can't find the right one, I'll do with what I have...

 

[Scott81]

That housing is correct for 1981, can't say for any other year though. When I replaced mine (when it was original) the 2-hole style was correct....I can't remember what the other fitting was.

 

[DDLS3]

You can buy several different styles that will bolt up from several different manufacturers. If you look in the Summit catalog you can see what they look like. I bought a TD brand, chrome, w/O-ring seal from my local parts store for $10. Any chevy housing will fit the corvette was not unique. Oh yeah and without any extra holes etc.