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 Page 1 of 2 12
Username Post: Square Body Radiator        (Topic#352374)
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-07-18 09:32 AM - Post#2742205    

I hope this is the right spot for my question.

I have this 73-87 radiator that has two extra fittings at the passenger side that go directly into the water passage so it would have something to do with water cooling. I have posted same question on other sites and was told they are for oil cooling system on some trucks, only thing wrong with that is these two fittings go into the water tank with no inner attaching tubing from one another. This is a auto trans radiator with two extra fittings in same area.
I will attach some pictures to show all the fittings (yes I know what auto trans fittings are). IF I can't post the pictures due to a re size problem I hope my descriptions will do for a answer.


Can also go to Palm Springs Craigslist under auto parts for sale, look for "Radiator 3 Core, fits Square Body Trucks"



Edited by 49erman on 08-08-18 08:29 PM. Reason for edit: No reason given.

 
454cid 
Valued Contributor
Posts: 2921

Age: 45
Loc: West Michigan
Reg: 02-18-12
08-07-18 02:28 PM - Post#2742229    
    In response to 49erman

I don't have a Squarebody, but from what I know of radiators, the engine oil cooler is normally on the driver's side. Unless the passenger side tank were very large, I can't imagine there being room for another cooler inside the tank if there is already a transmission cooler in place. There could be a single heater hose port on the passenger side coming from the heater core, but I don't know why there would be two. What does the port look like? Is it for heater hose? It's it threaded? Is the radiator a GM product or aftermarket? Is it brass/copper or plastic/aluminum?


99 K3500 RCLB


 
gchemist 
Senior Chevytalk Moderator
Posts: 24386
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
08-07-18 02:39 PM - Post#2742233    
    In response to 454cid

Heater hose connections.

'95 Jimmy SLT (Bought @131,814)
'83 Silverardo XST - ZZ4 powered
'96 GMC Jimmy LS Ret. @236651 miles


 
100 CHEVY 
Dedicated Member
Posts: 6327
100 CHEVY
Loc: Helena,Missippi,U.S.A.
Reg: 12-09-04
08-07-18 03:24 PM - Post#2742240    
    In response to 49erman

Many Suburbans and vans have dual heat and air,but the lines are usually tee'd into the rubber lines.
Maybe your radiator was used for that purpose.
Mike.

"You gonna leave it like that?
http://www.picturetrail.com/100chevy


 
Liberty Valance 
Poster
Posts: 70
Liberty Valance
Loc: Euless,Texas
Reg: 07-21-14
08-07-18 03:32 PM - Post#2742241    
    In response to 100 CHEVY

Could they be for the automatic transmission fluid cooling lines?

1974 Cheyenne 10 LWB 350/TH350/AC/4 BBL Quadrajet


 
2plus2 
Member
Posts: 1147

Loc: Mission,BC
Reg: 02-03-05
08-07-18 03:53 PM - Post#2742243    
    In response to Liberty Valance

Already said not the trans lines

How are the heater hoses routed?
1 to the intake and 1 to the water pump?
Or
1 to the intake and 1 to the rad?

Did the 73-88 truck get low coolant warning lights?
I know some 80's gm cars did

69 Canadian Pontiac 2+2
factory L48 350 Chev,TH350,PW,PT
99 Silverado RCLB 4.8 NV4500 14BSF 4.10's locker 6" Procomp 35 bfg m/t's 9k winch cutout flares
07 Town Car Loaded,Tinted,Getting Bagged


 
Liberty Valance 
Poster
Posts: 70
Liberty Valance
Loc: Euless,Texas
Reg: 07-21-14
08-07-18 04:33 PM - Post#2742248    
    In response to 2plus2

If the extra fittings are in the same area as the two transmission lines, then maybe it could have been used as a dual external transmission cooler cause the transmission cooling is in that area.

I think if the extra fittings are plugged/capped, you have heater hose, lower rad hose, and transmission lines connected, then if they don't leak, I would not be too concerned about them.

Interesting to know exactly they are for.

1974 Cheyenne 10 LWB 350/TH350/AC/4 BBL Quadrajet


 
Mercedes 
Contributor
Posts: 130

Reg: 07-09-18
08-08-18 05:20 PM - Post#2742382    
    In response to Liberty Valance

A pic would help. My 85 Suburban had an extra fitting on that side of the radiator and it was the heater core return.



 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-08-18 08:25 PM - Post#2742411    
    In response to Liberty Valance

  • Liberty Valance Said:
Could they be for the automatic transmission fluid cooling lines?



This radiator already has two fittings for auto trans fluid cooler. These are extra inlets one around 3/4" the other is smaller around 3/8".

Sorry can't post pictures here but go to Palm Springs Craigslist, under Auto Parts for sale, look for Title " Radiator 3 Core,fits Square Body trucks there's" four pictures are there to view.



 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-08-18 08:34 PM - Post#2742414    
    In response to 2plus2

  • 2plus2 Said:
Already said not the trans lines

How are the heater hoses routed?
1 to the intake and 1 to the water pump?
Or
1 to the intake and 1 to the rad?

Did the 73-88 truck get low coolant warning lights?
I know some 80's gm cars did




This radiator is "Not" in a 73-87 Truck, but it was in a 68 C10 and these inlets 3/4" and 3/8" had Nothing hooked up to them. This radiator was wrong for my 68 so I got one that was right for my truck



 
454cid 
Valued Contributor
Posts: 2921

Age: 45
Loc: West Michigan
Reg: 02-18-12
08-08-18 08:35 PM - Post#2742415    
    In response to 49erman

  • 49erman Said:


This radiator already has two fittings for auto trans fluid cooler. These are extra inlets one around 3/4" the other is smaller around 3/8".



That sounds like the heater core return and the over flow... if the small one is right under the cap.

  • Quote:
Sorry can't post pictures here but go to Palm Springs Craigslist, under Auto Parts for sale, look for Title " Radiator 3 Core,fits Square Body trucks there's" four pictures are there to view.



Can't find it. Post a link.

You can post pictures if you sign up for an image hosting service like Imgur, or one of the other ones... don't bother with Photobucket, Though.

99 K3500 RCLB


 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-08-18 08:39 PM - Post#2742419    
    In response to Liberty Valance

  • Liberty Valance Said:
If the extra fittings are in the same area as the two transmission lines, then maybe it could have been used as a dual external transmission cooler cause the transmission cooling is in that area.

I think if the extra fittings are plugged/capped, you have heater hose, lower rad hose, and transmission lines connected, then if they don't leak, I would not be too concerned about them.

Interesting to know exactly they are for.




Sorry Liberty but you are in left field on this, please go back and read the Thread/post from the top and start over again and you will understand this better. Not picking on you just re read first before posting something else.



 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-08-18 08:46 PM - Post#2742420    
    In response to Mercedes

  • Mercedes Said:
A pic would help. My 85 Suburban had an extra fitting on that side of the radiator and it was the heater core return.




Cant post pics here, but go to Palm Springs Craigslist under Auto Parts for sale look for the Title "Radiator 3 Core, fits Square Body Trucks there is four pics there.

This radiator was in my 68 C10 and it is Wrong for the 67-72 Trucks but it will mount to the core support of a 67-72 C10 but lower passenger radiator hose gets Kinked. This is why it was replaced with the right one.



 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-08-18 08:51 PM - Post#2742421    
    In response to gchemist

  • gchemist Said:
Heater hose connections.




If that is true why is there a 3/4" and a 3/8" inlets for extra heater hoses? Not making sense there.

My 68 C10 SBC engine already has its proper heater hoses connected properly.



 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-08-18 08:58 PM - Post#2742422    
    In response to 454cid

  • 454cid Said:
  • 49erman Said:


This radiator already has two fittings for auto trans fluid cooler. These are extra inlets one around 3/4" the other is smaller around 3/8".



That sounds like the heater core return and the over flow... if the small one is right under the cap.

  • Quote:
Sorry can't post pictures here but go to Palm Springs Craigslist, under Auto Parts for sale, look for Title " Radiator 3 Core,fits Square Body trucks there's" four pictures are there to view.



Can't find it. Post a link.

You can post pictures if you sign up for an image hosting service like Imgur, or one of the other ones... don't bother with Photobucket, Though.




Try looking again I was just there and its the first entry.

I don't do any online picture image hosting. If doing so like Photo Bucket they will some day hold your pictures hostage for $$$$, I'll pass on the hosting service.



Edited by 49erman on 08-08-18 09:09 PM. Reason for edit: No reason given.

 
2plus2 
Member
Posts: 1147

Loc: Mission,BC
Reg: 02-03-05
08-08-18 09:14 PM - Post#2742423    
    In response to 49erman

Found it
The one at the cap is for the over flow
The large one below the cap is heater core return,it switched from the water pump to the rad in the later models
Then the trans cooler
The small one IDK,I still think its a low coolant sensor
Trans line

Left side bottom is a drain plug


69 Canadian Pontiac 2+2
factory L48 350 Chev,TH350,PW,PT
99 Silverado RCLB 4.8 NV4500 14BSF 4.10's locker 6" Procomp 35 bfg m/t's 9k winch cutout flares
07 Town Car Loaded,Tinted,Getting Bagged


 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-08-18 09:23 PM - Post#2742427    
    In response to 2plus2

  • 2plus2 Said:
Found it
The one at the cap is for the over flow
The large one below the cap is heater core return,it switched from the water pump to the rad in the later models
Then the trans cooler
The small one IDK,I still think its a low coolant sensor
Trans line

Left side bottom is a drain plug





Go to Palm Springs Craigslist, Auto Parts for sale, look for "Radiator 3 Core, fits Square Body Trucks" for pictures of the radiator, four pics there.



 
2plus2 
Member
Posts: 1147

Loc: Mission,BC
Reg: 02-03-05
08-08-18 09:30 PM - Post#2742428    
    In response to 49erman

I already said I found it
And looked at the pics


69 Canadian Pontiac 2+2
factory L48 350 Chev,TH350,PW,PT
99 Silverado RCLB 4.8 NV4500 14BSF 4.10's locker 6" Procomp 35 bfg m/t's 9k winch cutout flares
07 Town Car Loaded,Tinted,Getting Bagged


 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-08-18 10:13 PM - Post#2742430    
    In response to 2plus2

  • 2plus2 Said:
I already said I found it
And looked at the pics




Excuse me, I only posted for you to look at and get a better idea of what the radiator looks like in picture form.

As for later trucks having re located return line water pump no longer having a outlet on top any more just for your info I looked up 73-87 SBC water pumps and just too mention a few Manufactures like Gates, Airtex, AC Delco and a few off brands they all have the outlet at the top of the water pump still. I am only interested in the 73-87 Trucks Radiator, none after them am I interested in.



Edited by 49erman on 08-08-18 10:17 PM. Reason for edit: No reason given.

 
100 CHEVY 
Dedicated Member
Posts: 6327
100 CHEVY
Loc: Helena,Missippi,U.S.A.
Reg: 12-09-04
08-09-18 06:26 AM - Post#2742450    
    In response to 49erman

My 82 ,K-10 I bought new has the heater core return going to the radiator.
I believe that the trucks with the A.I.R. system have it this way as the A.I.R. pump is in the way of the pump return outlet.
I also have a 68,C-10.
I have no idea what the 3/8" outlet on the radiator is for.

https://palmsprings.craigslist.org/pts/d/radiator-...
Mike.

"You gonna leave it like that?
http://www.picturetrail.com/100chevy


Edited by 100 CHEVY on 08-09-18 06:31 AM. Reason for edit: No reason given.

 
2plus2 
Member
Posts: 1147

Loc: Mission,BC
Reg: 02-03-05
08-09-18 06:59 AM - Post#2742454    
    In response to 49erman

  • 49erman Said:
  • 2plus2 Said:
I already said I found it
And looked at the pics




Excuse me, I only posted for you to look at and get a better idea of what the radiator looks like in picture form.

As for later trucks having re located return line water pump no longer having a outlet on top any more just for your info I looked up 73-87 SBC water pumps and just too mention a few Manufactures like Gates, Airtex, AC Delco and a few off brands they all have the outlet at the top of the water pump still. I am only interested in the 73-87 Trucks Radiator, none after them am I interested in.




Well then why dont you re ask your question for us stupid people that have no idea what you want to know even though we have told you more then once
That rad is a replacement for more then 73-87 c10s
Its going to fit c20s,c30s,k10s,k20s,k30s, blazers and suburbans from 73-91,yes I said 91 since gm still made square bodies then


69 Canadian Pontiac 2+2
factory L48 350 Chev,TH350,PW,PT
99 Silverado RCLB 4.8 NV4500 14BSF 4.10's locker 6" Procomp 35 bfg m/t's 9k winch cutout flares
07 Town Car Loaded,Tinted,Getting Bagged


 
Liberty Valance 
Poster
Posts: 70
Liberty Valance
Loc: Euless,Texas
Reg: 07-21-14
08-09-18 07:12 AM - Post#2742458    
    In response to 49erman

  • 49erman Said:
  • Liberty Valance Said:
If the extra fittings are in the same area as the two transmission lines, then maybe it could have been used as a dual external transmission cooler cause the transmission cooling is in that area.

I think if the extra fittings are plugged/capped, you have heater hose, lower rad hose, and transmission lines connected, then if they don't leak, I would not be too concerned about them.

Interesting to know exactly they are for.




Sorry Liberty but you are in left field on this, please go back and read the Thread/post from the top and start over again and you will understand this better. Not picking on you just re read first before posting something else.



Thank you for the quote, but, I already know how to upload photo and post a link!.


1974 Cheyenne 10 LWB 350/TH350/AC/4 BBL Quadrajet


 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-09-18 08:44 AM - Post#2742468    
    In response to Liberty Valance

  • Liberty Valance Said:
  • 49erman Said:
  • Liberty Valance Said:
If the extra fittings are in the same area as the two transmission lines, then maybe it could have been used as a dual external transmission cooler cause the transmission cooling is in that area.

I think if the extra fittings are plugged/capped, you have heater hose, lower rad hose, and transmission lines connected, then if they don't leak, I would not be too concerned about them.

Interesting to know exactly they are for.




Sorry Liberty but you are in left field on this, please go back and read the Thread/post from the top and start over again and you will understand this better. Not picking on you just re read first before posting something else.



Thank you for the quote, but, I already know how to upload photo and post a link!.




AS stated before the extra fittings holes don't have anything to do with trans lines or for any "duel external cooler" the extra fitting inlets don't have a internal tubing system going and coming from one another they go directly into the water tank. External coolers have trans fluid not water/coolant going through them. "If they don't leak I wouldn't be concerned with them" wow dude the reason I did this thread/post was to get the answer I need to identify this radiator.
As for posting pictures, I don't use outside picture hosting sites and for the posting a link to the pictures deal I guess I am stupid as was said before and it was the reason I posted a way through Craigslist to see them.



 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-09-18 09:02 AM - Post#2742472    
    In response to 100 CHEVY

  • 100 CHEVY Said:
My 82 ,K-10 I bought new has the heater core return going to the radiator.
I believe that the trucks with the A.I.R. system have it this way as the A.I.R. pump is in the way of the pump return outlet.
I also have a 68,C-10.
I have no idea what the 3/8" outlet on the radiator is for.

https://palmsprings.craigslist.org/pts/d/radiator-...
Mike.



Ding Ding Ding give this man a cigar, Mike you just might be on to something about a A.I.R pump deal. Someone above had said the same thing about a heater return line but didn't give a reason as to why it was used, you did with the A.I.R. deal thanks I'll look into it a little deeper.

On another thing I also was an Electrician for 30 yrs. My Grandparents lived in Gautier, Miss for 50 yrs, small world



 
454cid 
Valued Contributor
Posts: 2921

Age: 45
Loc: West Michigan
Reg: 02-18-12
08-09-18 10:36 AM - Post#2742478    
    In response to 49erman

  • 49erman Said:

Try looking again I was just there and its the first entry.



Interesting... I looked again and it popped right up. Last night I was getting all kinds of aluminum radiators and unrelated things. Even so, if you're asking for help it's best to not make people go dig for information to understand what you're looking at.

  • Quote:
I don't do any online picture image hosting. If doing so like Photo Bucket they will some day hold your pictures hostage for $$$$, I'll pass on the hosting service.



Photobucket isn't holding your pictures ransom. You still have full access to your pictures, you just can't use them for 3rd party hosting unless you're a paying customer.

You could have posted the link to the Craigslist ad.

Now that I've seen the radiator, the hose right below the cap is for the over flow, next is the heater core return, then transmission cooler, the next one I'd guess is for a coolant temperature sensor for AC, then the other transmission cooler line, and finally the lower radiator hose.

99 K3500 RCLB


 
454cid 
Valued Contributor
Posts: 2921

Age: 45
Loc: West Michigan
Reg: 02-18-12
08-09-18 10:50 AM - Post#2742481    
    In response to 49erman

  • 49erman Said:

As for later trucks having re located return line water pump no longer having a outlet on top any more just for your info I looked up 73-87 SBC water pumps and just too mention a few Manufactures like Gates, Airtex, AC Delco and a few off brands they all have the outlet at the top of the water pump still. I am only interested in the 73-87 Trucks Radiator, none after them am I interested in.



Non-OEM water pumps are built or rebuilt with as few variations as possible so they will work with more years, or so they can use fewer variations of parts in the build/rebuild process.

My truck has the return line going to the radiator, but my new pump has a return line port too... but I was given a plug to put there, if need be. I used the plug, but I've considered moving the hose, as I've never liked it on the radiator. The old pump did not have the port on the pump, but it was OEM. The new one is a Gates, and Gates likely uses the same casting for most big blocks, even if my impeller only goes back as far as Serpentine belts (reverse rotation).


99 K3500 RCLB


 
100 CHEVY 
Dedicated Member
Posts: 6327
100 CHEVY
Loc: Helena,Missippi,U.S.A.
Reg: 12-09-04
08-09-18 10:51 AM - Post#2742483    
    In response to 49erman

Life long resident in this area!
I remember when Gautier was a flashing light,KFC and the junior college on Hwy.90.
And,a couple of truck stops.
I looked at some of my truck radiators and none of them have that extra fitting.It's odd that the one you posted have threaded outlets too,as all mine are soldered hose nipples.
I have about a dozen of them up to a C-60/70.
Mike.

"You gonna leave it like that?
http://www.picturetrail.com/100chevy


 
454cid 
Valued Contributor
Posts: 2921

Age: 45
Loc: West Michigan
Reg: 02-18-12
08-09-18 12:26 PM - Post#2742492    
    In response to 100 CHEVY

  • 100 CHEVY Said:

I looked at some of my truck radiators and none of them have that extra fitting.It's odd that the one you posted have threaded outlets too,as all mine are soldered hose nipples.
I have about a dozen of them up to a C-60/70.
Mike.



It could be aftermarket and the threaded ports are more effectively plugged when the vehicle doesn't need them.


99 K3500 RCLB


 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-09-18 12:56 PM - Post#2742497    
    In response to 454cid

  • 454cid Said:
  • 49erman Said:

Try looking again I was just there and its the first entry.



Interesting... I looked again and it popped right up. Last night I was getting all kinds of aluminum radiators and unrelated things. Even so, if you're asking for help it's best to not make people go dig for information to understand what you're looking at.

  • Quote:
I don't do any online picture image hosting. If doing so like Photo Bucket they will some day hold your pictures hostage for $$$$, I'll pass on the hosting service.



Photobucket isn't holding your pictures ransom. You still have full access to your pictures, you just can't use them for 3rd party hosting unless you're a paying customer.

You could have posted the link to the Craigslist ad.

Now that I've seen the radiator, the hose right below the cap is for the over flow, next is the heater core return, then transmission cooler, the next one I'd guess is for a coolant temperature sensor for AC, then the other transmission cooler line, and finally the lower radiator hose.



Sorry for last nite Craigslist deal I had to re fresh it so it wasn't there when you looked but was there when I re fresh it. I don't know how to post pics here, other sites are easy not like this one. Posting a link for something I have no knowledge in how to do that.

I don't do third party picture hosting at all, my computer holds them so its easy for me to use it that way.

I have learned that this radiator might not be for trucks and just might be for Cars so the two extra fittings might be specific to cars.
Thanks



 
49erman 
Poster
Posts: 48

Loc: So Cal Lower Desert
Reg: 01-02-18
08-09-18 12:59 PM - Post#2742498    
    In response to 454cid

  • 454cid Said:
  • 49erman Said:

As for later trucks having re located return line water pump no longer having a outlet on top any more just for your info I looked up 73-87 SBC water pumps and just too mention a few Manufactures like Gates, Airtex, AC Delco and a few off brands they all have the outlet at the top of the water pump still. I am only interested in the 73-87 Trucks Radiator, none after them am I interested in.



Non-OEM water pumps are built or rebuilt with as few variations as possible so they will work with more years, or so they can use fewer variations of parts in the build/rebuild process.

My truck has the return line going to the radiator, but my new pump has a return line port too... but I was given a plug to put there, if need be. I used the plug, but I've considered moving the hose, as I've never liked it on the radiator. The old pump did not have the port on the pump, but it was OEM. The new one is a Gates, and Gates likely uses the same casting for most big blocks, even if my impeller only goes back as far as Serpentine belts (reverse rotation).





The one size fits all deal does make sense.



 
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