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#1 |
Registered User
Join Date: Jul 2008
Location: Eastern Oregon
Posts: 2,333
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292 Heater Hose Routing ?
Hooking up a heater in my 68 GMC with a 292, any one have a picture of the hose routing ? Thanks
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71 C-20 07 Magnum RT AWD |
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#2 |
The Older Generation
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Location: Montezuma, Iowa
Posts: 25,481
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Re: 292 Heater Hose Routing ?
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This maybe? #1 Or this? #2 I'm not sure it makes a difference on the six but maybe someone that is sharper than me on them will chime in.... LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - Last edited by LockDoc; 02-11-2014 at 10:39 PM. |
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#3 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,255
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Re: 292 Heater Hose Routing ?
I might have a shot...
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#4 |
Registered User
Join Date: Mar 2004
Location: Hoytsville, Utah
Posts: 3,365
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Re: 292 Heater Hose Routing ?
The question is, I think, is should the water pump up through the core or down through the core. I'm sure there is a correct way, but I doubt if it makes much difference overall.
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'68 Panel Project Boogie Chillin' '68 C-10 Ol' Green |
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#5 |
Registered User
Join Date: Aug 2010
Location: Edwards, CA
Posts: 7,503
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Re: 292 Heater Hose Routing ?
The correct flow is from the t-stat housing to the lower heater core nipple (the inlet). Then it runs from the upper heater core nipple (the outlet) to the water pump. While I am not positive, IIRC the HD cooling, automatic or A/C trucks returned to the radiator as did V-8s.
The reason it flows this way (bottom up) is to purge trapped air (pockets) from the heater core which would cause it to be cool.
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Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
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#6 |
Registered User
Join Date: Jul 2008
Location: Eastern Oregon
Posts: 2,333
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Re: 292 Heater Hose Routing ?
Thank you to all for the information ! Another question about the core position in its housing ? Is the 3/4 connection the inlet or the outlet ? My wife is yelling about the heater parts all over the kitchen table !.......
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71 C-20 07 Magnum RT AWD |
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#7 |
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,216
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Re: 292 Heater Hose Routing ?
The 3/4 " tube is the outlet.
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#8 |
Registered User
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Location: South Orange County CA
Posts: 1,263
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Re: 292 Heater Hose Routing ?
Is this correct?
1.to small inlet of core 2.to large outlet of core 3. to radiator
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1963 C20, small window, long bed 292, 4-speed |
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#9 | |
Moderator
![]() Join Date: Aug 2017
Location: Cabarrus
Posts: 417
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Re: 292 Heater Hose Routing ?
Quote:
Correct, here is my 67 c50 for reference.
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Alex 1967 C50 292ci Lumber truck 1967 C50 292ci Dump truck 1967 C60 366ci Fire truck |
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#10 |
Registered User
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Location: South Orange County CA
Posts: 1,263
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Re: 292 Heater Hose Routing ?
Ok. Thanks.
The only difference, mine has only one threaded port on the passenger side of the thermostat.
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1963 C20, small window, long bed 292, 4-speed |
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#11 |
Moderator
![]() Join Date: Aug 2017
Location: Cabarrus
Posts: 417
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Re: 292 Heater Hose Routing ?
Here are the differences over the years in thermostat housings and water pumps. The pics are not mine*
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Alex 1967 C50 292ci Lumber truck 1967 C50 292ci Dump truck 1967 C60 366ci Fire truck |
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