Coolant Overflow Tank - Factory in 72? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cedorris · 10-08-2012, 02:35 PM

Were the 1972 Supers factory equipped with coolant overflow tanks or is that an option someone added later?

If these trucks were factory equipped with a coolant overflow, where can I get one? The tank on mine is severally damaged.

Thanks,
Clayton

**Classic Heartbeat** · 10-08-2012, 02:50 PM

GM did have an coolant overflow tank for these truck as an option, but trying to locate one would be like finding a needle in a haystack. We have one that we offer that looks like it belongs under the hood, but is not stock. You can find them in radiators andrelated in our website. Right now it says they are temporarily out of stock, but that is because I haven't gotten the chance to update our website. I will try to do that today.. WES

http://www.classicheartbeat.com/radi...&__related.htm

cedorris · 10-08-2012, 04:06 PM

Quote:

Originally Posted by Classic Heartbeat

GM did have an coolant overflow tank for these truck as an option, but trying to locate one would be like finding a needle in a haystack. We have one that we offer that looks like it belongs under the hood, but is not stock. You can find them in radiators andrelated in our website. Right now it says they are temporarily out of stock, but that is because I haven't gotten the chance to update our website. I will try to do that today.. WES

http://www.classicheartbeat.com/radi...&__related.htm

That looks very similar to what I have. What is the price when they are in stock?

**john** · 10-08-2012, 04:11 PM

SPID pic.

cedorris · 10-08-2012, 04:22 PM

Is this what the original tank looks like?

cedorris · 10-09-2012, 12:43 PM

Quote:

Originally Posted by Classic Heartbeat

GM did have an coolant overflow tank for these truck as an option, but trying to locate one would be like finding a needle in a haystack. We have one that we offer that looks like it belongs under the hood, but is not stock. You can find them in radiators andrelated in our website. Right now it says they are temporarily out of stock, but that is because I haven't gotten the chance to update our website. I will try to do that today.. WES

http://www.classicheartbeat.com/radi...&__related.htm

Let me know when you get the site updated - I'm ready to order

A.Bursell · 10-10-2012, 04:00 AM

Quote:

Originally Posted by Classic Heartbeat

GM did have an coolant overflow tank for these truck as an option, but trying to locate one would be like finding a needle in a haystack. We have one that we offer that looks like it belongs under the hood, but is not stock. You can find them in radiators andrelated in our website. Right now it says they are temporarily out of stock, but that is because I haven't gotten the chance to update our website. I will try to do that today.. WES

http://www.classicheartbeat.com/radi...&__related.htm

Hi Wes,
If I'm seeing correctly, your setup looks like a correct washer fluid tank/bracket with a later model coolant tank top on it. Is that correct? Wonder how that plastic handles the heat of the coolant...? Any concerns since it was not designed for that?

Adam

**Already Gone** · 10-10-2012, 04:24 AM

I bought this setup from Wes 4 or 5 years ago and it works perfect and the heat doesn't affect the plastic.
Posted via Mobile Device

Steve Hafner · 10-10-2012, 04:28 AM

. . . .

This one, attached to the core support, was said to be an original on a 72.

. . . .

cedorris · 10-10-2012, 10:38 AM

Quote:

Originally Posted by Steve Hafner

. . . .

This one, attached to the core support, was said to be an original on a 72

Mine looks nothing like that and I have no indication of one on the SPID. Looks like I'll be buying one from Wes when they are back in stock. Thanks!

**Classic Heartbeat** · 10-10-2012, 07:54 PM

I have plenty of bottles and plenty of caps now. I am waiting on the mounting brackets. I had one bracket but Chance emailed me wanting one so that ate up my only bracket at this time. The cost of them will be $59.95 plus an additional $5.00 if you want the second hose that runs from the cap thru the hole in the right front inner fender. WES

**leddzepp** · 12-09-2013, 08:39 PM

Quote:

Originally Posted by Steve Hafner

. . . .

This one, attached to the core support, was said to be an original on a 72.

. . . .

Where would it mount if there was already an auxiliary battery tray there?

I found one mounted on the opposite side for that reason I assume. It's close, but the hood closes and clears the jug.

cdowns · 10-08-2012, 02:51 PM

not standard// there was an optional one that is very rarely seen// most you find are add ons by a previous owner

71 super · 10-10-2012, 08:35 PM

The unit steve posted it the correct GM unit. I have a NOS unit I installed on my 71 super serveral years ago.

**FirstOwner69** · 10-10-2012, 10:57 PM

I was touring my local junkyard today and saw a 72 with a coolant tank. It appears to be identical to the one Steve posted. I remembered this thread and decided to take it. Unfortunately I didn't realize how brittle it was and some holes developed as I carried it out. It was mounted to the left of the radiator as in Steve's picture. The hose is 62" long. The glovebox door was missing so I couldn't check the SPID, and I'm not sure it was original to the truck as it was mounted with slot head screws. Here are a couple pictures just for reference.

thetruckrman · 05-31-2017, 08:16 AM

Great photos. Thanks for sharing!

Quote:

Originally Posted by FirstOwner69

I was touring my local junkyard today and saw a 72 with a coolant tank. It appears to be identical to the one Steve posted. I remembered this thread and decided to take it. Unfortunately I didn't realize how brittle it was and some holes developed as I carried it out. It was mounted to the left of the radiator as in Steve's picture. The hose is 62" long. The glovebox door was missing so I couldn't check the SPID, and I'm not sure it was original to the truck as it was mounted with slot head screws. Here are a couple pictures just for reference.

cedorris · 10-10-2012, 11:00 PM

So it looks like the factory original coolant overflow bottles all connected at the bottom and didn't have a hose connection on top?
Posted via Mobile Device

**FirstOwner69** · 10-10-2012, 11:03 PM

Quote:

Originally Posted by cedorris

So it looks like the factory original coolant overflow bottles all connected at the bottom and didn't have a hose connection on top?
Posted via Mobile Device

Looks like it. No reason it wouldn't work.

A.Bursell · 10-11-2012, 01:59 AM

Quote:

Originally Posted by cedorris

So it looks like the factory original coolant overflow bottles all connected at the bottom and didn't have a hose connection on top?
Posted via Mobile Device

It's not an overflow tank, it's an "expansion" tank. By connecting on the bottom the coolant level will move up and down with heat cycles, always keeping the radiator full. The tanks that just connect at the top wont work that way unless they have a hose run inside to the bottom.

Adam
Posted via Mobile Device

DMCK · 10-20-2012, 01:07 PM

When adding a overflow/expansion tank, do you need to change rad cap so it opens under vacuum to draw coolant back in.
Thanks.....Dave
Posted via Mobile Device

**med.bronze** · 10-20-2012, 01:52 PM

here's a dealer installed unit

Vintage Windmills · 10-10-2012, 11:14 PM

anyone know what year this became an option?

tgoatman · 12-04-2012, 12:16 AM

FirstOwner69 - I have some information for you. That tank you show isn't the same as part # 994230 as shown in med.bronze's photos above. 994230 was a dealer installed part that was put into many trucks before they were sold, but they are not factory. Those parts are VERY rarely seen as NOS. I've been looking for one for 2 years, and so far have just come up with a bracket, no bottle.

The photos you show are of an overflow bottle that is still sold by GM for motorhome and commercial vans. I have one in my garage right now - bracket is part #: 15996772 and teh bottle is part #:15687277. The difference between the two is that 994230 was made specifically to mount to the left side of the radiaror suppot, and there is no good spot to mount the bracket #15996772 on a pickup anywhere, as it's intended to go on the firewall on those commercial vans. You could potentially tweak it to work, but get ready, though, the bracket is $20 and the bottle is $72 list price.

**allchevy58** · 12-04-2012, 01:12 AM

GMPartsDirect.com has #15996772 for $33.12 and #15687277 for $8.97. Doesn't show it fitting a 1972 pickup but the prices sure are different. They don't list #994230.

tgoatman · 12-04-2012, 02:33 PM

Yeah, definitely easy to find those items cheaper online. Unfortunately they don't really work on these trucks, unless you want to do some fab. If you do, then it's possible to make it look a lot like the original dealer installed 994230.

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10-08-2012, 02:50 PM	#2
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,766	Re: Coolant Overflow Tank - Factory in 72? GM did have an coolant overflow tank for these truck as an option, but trying to locate one would be like finding a needle in a haystack. We have one that we offer that looks like it belongs under the hood, but is not stock. You can find them in radiators andrelated in our website. Right now it says they are temporarily out of stock, but that is because I haven't gotten the chance to update our website. I will try to do that today.. WES http://www.classicheartbeat.com/radi...&__related.htm __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

10-08-2012, 04:11 PM	#4
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: Coolant Overflow Tank - Factory in 72? SPID pic. Attached Images __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/

10-08-2012, 04:22 PM	#5
cedorris 1972 Chevy Cheyenne Super Join Date: Feb 2009 Location: Oklahoma City, OK Posts: 302	Re: Coolant Overflow Tank - Factory in 72? Is this what the original tank looks like? __________________ -Clayton 1972 Cheyenne Super LWB 350 - farm truck restore project - twitter @oldgreen

10-10-2012, 04:24 AM	#8
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,145	Re: Coolant Overflow Tank - Factory in 72? I bought this setup from Wes 4 or 5 years ago and it works perfect and the heat doesn't affect the plastic. Posted via Mobile Device __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021

10-10-2012, 07:54 PM	#11
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,766	Re: Coolant Overflow Tank - Factory in 72? I have plenty of bottles and plenty of caps now. I am waiting on the mounting brackets. I had one bracket but Chance emailed me wanting one so that ate up my only bracket at this time. The cost of them will be $59.95 plus an additional $5.00 if you want the second hose that runs from the cap thru the hole in the right front inner fender. WES __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

10-08-2012, 02:35 PM	#1
cedorris 1972 Chevy Cheyenne Super Join Date: Feb 2009 Location: Oklahoma City, OK Posts: 302	Coolant Overflow Tank - Factory in 72? Were the 1972 Supers factory equipped with coolant overflow tanks or is that an option someone added later? If these trucks were factory equipped with a coolant overflow, where can I get one? The tank on mine is severally damaged. Thanks, Clayton __________________ -Clayton 1972 Cheyenne Super LWB 350 - farm truck restore project - twitter @oldgreen

10-10-2012, 04:28 AM	#9
Steve Hafner Registered User Join Date: Sep 2010 Location: Northport, Alabama Posts: 1,353	Re: Coolant Overflow Tank - Factory in 72? . . . . This one, attached to the core support, was said to be an original on a 72. . . . . Attached Images

10-08-2012, 02:51 PM	#13
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Coolant Overflow Tank - Factory in 72? not standard// there was an optional one that is very rarely seen// most you find are add ons by a previous owner __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

10-10-2012, 08:35 PM	#14
71 super Registered User Join Date: Sep 2005 Location: Canton North carolina Posts: 3,080	Re: Coolant Overflow Tank - Factory in 72? The unit steve posted it the correct GM unit. I have a NOS unit I installed on my 71 super serveral years ago. __________________ 67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle

10-10-2012, 10:57 PM	#15
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,852	Re: Coolant Overflow Tank - Factory in 72? I was touring my local junkyard today and saw a 72 with a coolant tank. It appears to be identical to the one Steve posted. I remembered this thread and decided to take it. Unfortunately I didn't realize how brittle it was and some holes developed as I carried it out. It was mounted to the left of the radiator as in Steve's picture. The hose is 62" long. The glovebox door was missing so I couldn't check the SPID, and I'm not sure it was original to the truck as it was mounted with slot head screws. Here are a couple pictures just for reference. Attached Images

10-10-2012, 11:00 PM	#17
cedorris 1972 Chevy Cheyenne Super Join Date: Feb 2009 Location: Oklahoma City, OK Posts: 302	Re: Coolant Overflow Tank - Factory in 72? So it looks like the factory original coolant overflow bottles all connected at the bottom and didn't have a hose connection on top? Posted via Mobile Device __________________ -Clayton 1972 Cheyenne Super LWB 350 - farm truck restore project - twitter @oldgreen

10-20-2012, 01:07 PM	#20
DMCK Registered User Join Date: Dec 2011 Location: alberta, canada Posts: 10	Re: Coolant Overflow Tank - Factory in 72? When adding a overflow/expansion tank, do you need to change rad cap so it opens under vacuum to draw coolant back in. Thanks.....Dave Posted via Mobile Device

10-20-2012, 01:52 PM	#21
med.bronze Senior Member Join Date: Dec 2011 Location: Laurel, Mt. Posts: 522	Re: Coolant Overflow Tank - Factory in 72? here's a dealer installed unit Attached Images __________________ 1972 Cheyenne Super 10 SWB,bucket seats,dealer cruise,tilt,tac,a/c,shoulder belts, 350/350 1971 K-10 Custom Deluxe 1971 K-10 Custom

10-10-2012, 11:14 PM	#22
Vintage Windmills Vintage 4x4s Join Date: Sep 2010 Location: Prior Lake, MN Posts: 4,305	Re: Coolant Overflow Tank - Factory in 72? anyone know what year this became an option? __________________ 67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6

12-04-2012, 12:16 AM	#23
tgoatman Registered User Join Date: Dec 2012 Location: San Diego, CA Posts: 11	Re: Coolant Overflow Tank - Factory in 72? FirstOwner69 - I have some information for you. That tank you show isn't the same as part # 994230 as shown in med.bronze's photos above. 994230 was a dealer installed part that was put into many trucks before they were sold, but they are not factory. Those parts are VERY rarely seen as NOS. I've been looking for one for 2 years, and so far have just come up with a bracket, no bottle. The photos you show are of an overflow bottle that is still sold by GM for motorhome and commercial vans. I have one in my garage right now - bracket is part #: 15996772 and teh bottle is part #:15687277. The difference between the two is that 994230 was made specifically to mount to the left side of the radiaror suppot, and there is no good spot to mount the bracket #15996772 on a pickup anywhere, as it's intended to go on the firewall on those commercial vans. You could potentially tweak it to work, but get ready, though, the bracket is $20 and the bottle is $72 list price. Last edited by leddzepp; 12-04-2012 at 03:33 PM. Reason: wtb non subscriber



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12-04-2012, 01:12 AM	#24
allchevy58 Senior Member Join Date: Aug 2011 Location: Reno, Nv. Posts: 1,440	Re: Coolant Overflow Tank - Factory in 72? GMPartsDirect.com has #15996772 for $33.12 and #15687277 for $8.97. Doesn't show it fitting a 1972 pickup but the prices sure are different. They don't list #994230. __________________ 1927 Willy's Knight 24,000 original miles, 1958 Impala 283/Powerglide, 1971 Monte Carlo 350/350, 1972 GMC K2500 350/350, 1976 Chev. K10 350/350, 2006 GMC Sierra 2500HD LBZ Duramax/Allison, 2006 Chev. Silverado K3500 LBZ Duramax/Allison

12-04-2012, 02:33 PM	#25
tgoatman Registered User Join Date: Dec 2012 Location: San Diego, CA Posts: 11	Re: Coolant Overflow Tank - Factory in 72? Yeah, definitely easy to find those items cheaper online. Unfortunately they don't really work on these trucks, unless you want to do some fab. If you do, then it's possible to make it look a lot like the original dealer installed 994230. Please note that you must be a supporting member to post classified items. This includes but is not limited to What Its Worth, Want To Buy, Want To Trade, and For Sale. Please consider supporting the forum by subscribing. Further information on the subscription levels available are located here If you need any further assistance with that please contact any Admin for help. Last edited by leddzepp; 12-04-2012 at 03:33 PM. Reason: wtb non subscriber

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