radiator & heater hose question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Texasdeere · 01-17-2007, 09:58 PM

I have been looking at new replacement radiators lately. It doesn't seem that any of them have the heater hose connection like most of these trucks came with.

If using one of these new radiators should the heater hose then be connected to the water pump?

Just trying to figure out what everyone is doing.

*rage'nrat638* · 01-17-2007, 10:09 PM

one to the water pump
one to the intake

on a 350 engine

chipflyer · 01-17-2007, 10:42 PM

Yes, many were that way originally. I think I saw the correct fitting for the water pump nipple in the HELP section at Oriely auto last week if you need one. Water exits the intake fitting through a 5/8 hose and goes into the lower fitting on the heater core and returns from the top fitting through a 3/4 hose into the water pump.

Jeff

Sport/Truck · 01-17-2007, 11:20 PM

What is the deal with the radiator having the return on the radiator instead of the water pump? Does it matter where you plumb the intake?

Mark, is that powder coat on the water pump & intake? That is really looking good.
s/t

*rage'nrat638* · 01-17-2007, 11:41 PM

NOPE MY LAST NAME IS RAMIREZ

i can spray paint big time

Longhorn Man · 01-18-2007, 01:47 AM

LOL Mark...you ain't right!!!!!

Sport/Truck · 01-19-2007, 02:27 PM

Quote:

Originally Posted by rage'nrat638

NOPE MY LAST NAME IS RAMIREZ

i can spray paint big time

All of that paint is rattle-canned?? What brand of paint is it. I think I will do my block too. Also where can I get some valve covers like you have (GMC of course)?
s/t

Longhorn Man · 01-19-2007, 08:39 PM

if you clean the engine properly, you can get awsome rattle can results. I don't have pics on this computer, but the 350 that was in my first longhorn looked that good, and it was done with rattle.

*rage'nrat638* · 01-19-2007, 09:50 PM

Quote:

Originally Posted by Sport/Truck

All of that paint is rattle-canned?? What brand of paint is it. I think I will do my block too. Also where can I get some valve covers like you have (GMC of course)?
s/t

yup..i cleaned with starting fluid.

thats the cast color and clear the chevy orange is the same brand as the clear..
i sprayed clear over the cast color...

the valve covers are GM proformance i don't think they make ones that say GMC ?

Sport/Truck · 01-19-2007, 10:49 PM

Thanks Mark. Are your pulleys sprayed with that cast color or just a silver?
Cleaned with starting fluid? (just don’t do it in the garage with the doors shut! Do all starting fluids clean the same? Good tip. Thanks.
s/t

timcos · 01-20-2007, 12:14 AM

Mine has a hose form the intake (supply to the heater core) and leaves the heater core to the radiator inlet on the rear passenger side of the radiator.

Tim

Texasdeere · 01-29-2007, 10:33 PM

My 78 and 72 truck are the same way Tim. The cheap four cores online don't seem to come that way though.

timcos · 01-30-2007, 12:31 AM

I guess when I get my replacement radiator...I will connect the hose that is supposed to go to the radiator...to the water pump...right?

Tim

chipflyer · 01-30-2007, 12:34 AM

Hi Tim,
That is correct!

Jeff

01-17-2007, 09:58 PM	#1
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	radiator & heater hose question I have been looking at new replacement radiators lately. It doesn't seem that any of them have the heater hose connection like most of these trucks came with. If using one of these new radiators should the heater hose then be connected to the water pump? Just trying to figure out what everyone is doing.

01-17-2007, 10:09 PM	#2
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	Re: radiator & heater hose question one to the water pump one to the intake on a 350 engine Last edited by rage'nrat638; 07-12-2007 at 06:59 AM.

01-17-2007, 10:42 PM	#3
chipflyer Registered User Join Date: May 2004 Location: Topeka, Ks Posts: 2,293	Re: radiator & heater hose question Yes, many were that way originally. I think I saw the correct fitting for the water pump nipple in the HELP section at Oriely auto last week if you need one. Water exits the intake fitting through a 5/8 hose and goes into the lower fitting on the heater core and returns from the top fitting through a 3/4 hose into the water pump. Jeff __________________ I'm not a pessimist, I'm just optimistic that bad things are going to happen. 1971 Cheyenne Super K10 - tilt, cruise, air, am/fm, tow hooks, factory buckets! 1986 Jeep J10 pickup, - 5.3L Vortec with 4L60e and NP241. Last edited by chipflyer; 01-18-2007 at 09:49 AM.

01-17-2007, 11:20 PM	#4
Sport/Truck Sierra Grande Club Join Date: Jan 2007 Location: New Mexico USA Posts: 2,433	Re: radiator & heater hose question What is the deal with the radiator having the return on the radiator instead of the water pump? Does it matter where you plumb the intake? Mark, is that powder coat on the water pump & intake? That is really looking good. s/t __________________ 1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.

01-17-2007, 11:41 PM	#5
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	Re: radiator & heater hose question NOPE MY LAST NAME IS RAMIREZ i can spray paint big time Last edited by rage'nrat638; 01-17-2007 at 11:42 PM.

01-18-2007, 01:47 AM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: radiator & heater hose question LOL Mark...you ain't right!!!!!

01-19-2007, 08:39 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: radiator & heater hose question if you clean the engine properly, you can get awsome rattle can results. I don't have pics on this computer, but the 350 that was in my first longhorn looked that good, and it was done with rattle.

01-19-2007, 10:49 PM	#10
Sport/Truck Sierra Grande Club Join Date: Jan 2007 Location: New Mexico USA Posts: 2,433	Re: radiator & heater hose question Thanks Mark. Are your pulleys sprayed with that cast color or just a silver? Cleaned with starting fluid? (just don’t do it in the garage with the doors shut! Do all starting fluids clean the same? Good tip. Thanks. s/t __________________ 1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.

01-20-2007, 12:14 AM	#11
timcos Chief Honcho In Charge Join Date: Aug 2006 Location: Bentonville AR Posts: 970	Re: radiator & heater hose question Mine has a hose form the intake (supply to the heater core) and leaves the heater core to the radiator inlet on the rear passenger side of the radiator. Tim __________________ 1992 1500 4x4 Shortbed 1984 Ford F250 Supercab Longbed 6.9L Diesel 1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C 1971 VW SuperBeetle 1960 Wife 1984 Son 1986 Son 1989 Son Previous Trucks 1967 C10 SWB (1980-1981) 1971 C10 LWB (1998-2004)

01-29-2007, 10:33 PM	#12
Texasdeere Registered User Join Date: Sep 2006 Location: League City, Texas Posts: 732	Re: radiator & heater hose question My 78 and 72 truck are the same way Tim. The cheap four cores online don't seem to come that way though.

01-30-2007, 12:31 AM	#13
timcos Chief Honcho In Charge Join Date: Aug 2006 Location: Bentonville AR Posts: 970	Re: radiator & heater hose question I guess when I get my replacement radiator...I will connect the hose that is supposed to go to the radiator...to the water pump...right? Tim __________________ 1992 1500 4x4 Shortbed 1984 Ford F250 Supercab Longbed 6.9L Diesel 1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C 1971 VW SuperBeetle 1960 Wife 1984 Son 1986 Son 1989 Son Previous Trucks 1967 C10 SWB (1980-1981) 1971 C10 LWB (1998-2004)

01-30-2007, 12:34 AM	#14
chipflyer Registered User Join Date: May 2004 Location: Topeka, Ks Posts: 2,293	Re: radiator & heater hose question Hi Tim, That is correct! Jeff __________________ I'm not a pessimist, I'm just optimistic that bad things are going to happen. 1971 Cheyenne Super K10 - tilt, cruise, air, am/fm, tow hooks, factory buckets! 1986 Jeep J10 pickup, - 5.3L Vortec with 4L60e and NP241.

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