Radiator reservoir

[RayRay72]

Isn't there supposed to be a reservoir for the radiator when it gets hot. If so where does it go ?

I googled some images but the only reservoir I see is for the window wash

[1970mcss]

My 70 doesn't have a reservoir. It has a hose that discharges strait down the radiator support to the ground 

[Scott S.]

Back in the '70's, it was considered safer to vent the hot fluid to ground than to have a tank.

Back then environmental standards were a little more "lacking".....  And it was assumed that everyone carried a jug of something to refill the radiator. 

There are a couple posts on site recommending tanks that fit well in our cars. 

 

[willie]

Hey Ray, i put on my 72 a Camaro overflow tank.     Dont remember what year it was but someone else will chime in and let us know, i am sure!!!

[Dtret]

I think it was like a 73/74 nova. A lot of us tucked the on the passenger side of the battery inside the fender so you can barely tell that they are there. 

[cny first gen 71]

I think what has been used is from 75-79 maybe nova from what I've heard.  Joe did it on his he will know. Mine is just a tank that sits out in the open. It works for now.

[Dtret]

6 minutes ago, cny first gen 71 said:

I think what has been used is from 75-79 maybe nova from what I've heard.  Joe did it on his he will know. Mine is just a tank that sits out in the open. It works for now.

You may be correct. I thought what I posted seemed a little early. lol. 

[Marks71]

75-79 Nova. Somewhat concealed under the fender next to the battery. About $40. Many suppliers, but the cap is separate with most.

[420ponies]

51 minutes ago, Marks71 said:

75-79 Nova. Somewhat concealed under the fender next to the battery. About $40. Many suppliers, but the cap is separate with mos

I have installed it on mine since the new BBC has indicated that it needs it. Before it just went onto the ground with the small block ( never an issue). 75-79 Nova .Like $50 and hides behind the battery.

[DragCat]

Many people have gone the Nova route....looks nice. 70's did not have one. Because of track regulations I just used a 24 oz water bottle and painted it black so its not so obvious 🤣

[willie]

I am not sure but i don't think it was a Nova, reason being i never bought anything from a Nova supplier. Had to be a Camaro i have bought from there. Now i will look it up for you guys!

[Dtret]

3 minutes ago, willie said:

I am not sure but i don't think it was a Nova, reason being i never bought anything from a Nova supplier. Had to be a Camaro i have bought from there. Now i will look it up for you guys!

I think I got mine from Camaro central. ( but for a nova). lol. 😂 

[willie]

Ok i was right and i was wrong. I bought it from Summit, it doesn't say what it is for, but here are the part numbers for anyone that is interested OER 371978 rad overflow and OER 551448   75-79 rad overflow cap.  Hope this helps!!!

[Joselk1]

2 hours ago, willie said:

Ok i was right and i was wrong. I bought it from Summit, it doesn't say what it is for, but here are the part numbers for anyone that is interested OER 371978 rad overflow and OER 551448   75-79 rad overflow cap.  Hope this helps!!!

That’s what I have for overflow.  Tucked in the fender alongside the battery.
 

Mine leaks a few drops evertime I drive it….tried new cap, new gasket…I’ll figure it out eventually but I’m  busy putting miles on it during our short season. 

[jft69z]

8 hours ago, willie said:

Ok i was right and i was wrong. I bought it from Summit, it doesn't say what it is for, but here are the part numbers for anyone that is interested OER 371978 rad overflow and OER 551448   75-79 rad overflow cap.  Hope this helps!!!

It's for Nova, Buick Skylark, etc, and those are the correct numbers you have listed. The 'OER' site breaks the application list down even further. Most of the usual places stock them, Summit, SS396, Parts Place, Jegs, etc.

https://www.oerparts.com/product/551448.html

https://www.oerparts.com/product/371978.html

[Dtret]

9 hours ago, willie said:

Ok i was right and i was wrong. I bought it from Summit, it doesn't say what it is for, but here are the part numbers for anyone that is interested OER 371978 rad overflow and OER 551448   75-79 rad overflow cap.  Hope this helps!!!

Same as me, wrong year, right car. lol. 

[willie]

25 minutes ago, Dtret said:

Same as me, wrong year, right car. lol. 

Lol   naa i am usually always wrong, not on purpose but i dont remember anything!!!

[72 Monte Carlo]

I bought a 3rd gen camaro tank for mine, but seeing how the Nova tank is tucked in the inner fender, I'm going to get one of them instead. 

[Chevy Dave]

I have a 4 core radiator, HD fan clutch, 180 deg. thermostat, 50% antifreeze, factory AC and the correct coolant level.  I never loose any water. Why would I need an overflow tank?

[Dtret]

29 minutes ago, Chevy Dave said:

I have a 4 core radiator, HD fan clutch, 180 deg. thermostat, 50% antifreeze, factory AC and the correct coolant level.  I never loose any water. Why would I need an overflow tank?

Technically you don’t. The car never came with one. 

[Scott S.]

It's one of those environmental things...... And it keeps your dog from getting sick. 

[cny first gen 71]

4 minutes ago, Scott S. said:

It's one of those environmental things...... And it keeps your dog from getting sick. 

Yea dogs, cars squirrels  and mice love the taste of anti freeze unfortunately it's not good for them. Well at least the dogs and cats the mice and squirrels can have all they want.

[Scott S.]

Works good on ants too..... 

[Scott S.]

and apparently the French like to use it in making their wine.....