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#1 |
Registered User
Join Date: Jul 2014
Location: Chattanooga
Posts: 45
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yes....another heater core question...
I've been searching, and have not seen what I need. I'm replacing my heater core and forgot which coolant inlet/outlet goes on top-the big tube. or the little? It's for my 69 c-10 cab. Also does anyone have a flow diagram? I was wondering if the heater core is fed from the top to the bottom, or bottom to top?
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1969 Chevy C-10 ramp truck/C-30 running gear |
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#2 |
Registered User
![]() Join Date: Aug 2007
Location: Sandy, Oregon
Posts: 1,551
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Re: yes....another heater core question...
Bigger one goes on the bottom, little one on top.
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Scotts72C10 |
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#3 |
Registered User
Join Date: Jul 2014
Location: Chattanooga
Posts: 45
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Re: yes....another heater core question...
great, thanks! does the core get fed from the bottom, or in the top?
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1969 Chevy C-10 ramp truck/C-30 running gear |
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#4 |
Registered User
![]() Join Date: Aug 2007
Location: Sandy, Oregon
Posts: 1,551
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Re: yes....another heater core question...
Pretty sure it comes in the top and exits the bottom. Just like a radiator.
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Scotts72C10 |
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#5 |
Senior Member
![]() Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,848
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Re: yes....another heater core question...
Jeez im glad i ran across this. I just refurbished my heater assy and looked to see my core is upsidedown!!!
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1967custom |
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#6 |
Registered User
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Location: Sandy, Oregon
Posts: 1,551
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Re: yes....another heater core question...
It looks like I was wrong. I have it backwards. Here is a pic from my sons truck. Looks like the bigger one is on top in this pic
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Scotts72C10 |
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#7 |
Registered User
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Location: Sandy, Oregon
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Re: yes....another heater core question...
Picture
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Scotts72C10 |
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#8 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,623
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Re: yes....another heater core question...
Hot water enters the heater core at the bottom, through the smaller nipple.
Water exits the heater core through at the top, through the larger nipple.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#9 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Correct bottom is feed top is exit.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#10 |
Senior Member
![]() Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,848
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Re: yes....another heater core question...
Ok got it. I was correct the first time. Thanks and im sorry for hi jacking!
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1967custom |
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#11 |
Registered User
Join Date: May 2013
Location: Central NC
Posts: 830
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Re: yes....another heater core question...
Here is a thread from when I did mine, may help someone in the future.
http://67-72chevytrucks.com/vboard/s...d.php?t=600448
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1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives ![]() |
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#12 | |
Registered User
Join Date: May 2013
Location: Central NC
Posts: 830
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Re: yes....another heater core question...
Quote:
Correct, large tube on top.
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1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives ![]() |
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#13 |
Registered User
Join Date: Jul 2014
Location: Chattanooga
Posts: 45
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thanks guys!! I'm gonna have heat tomorrow!!!
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1969 Chevy C-10 ramp truck/C-30 running gear |
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