Radiator hose - The 1947 - Present Chevrolet & GMC Truck Message Board Network

57chevyman · 01-10-2015, 11:59 AM

Hey guys , can someone give me a part # for the upper radiator hose that I need ? Want to replace this "flex hose" with a nice new smooth hose.

Highsider · 01-10-2015, 12:09 PM

I am sure someone will pop in with the number.
I have a nice, smooth, molded NAPA hose, that I must have trimmed the length, as there is no number.

va4cqd · 01-10-2015, 02:17 PM

try a napa NBH-7240 for upper and NBH-7438 for lower. both will need trimming

57chevyman · 01-10-2015, 02:41 PM

Thank you

OrrieG · 01-10-2015, 03:00 PM

There are Gates # in my build thread towards the middle.

57chevyman · 01-10-2015, 03:55 PM

Anyone have a Dayco cross reference ? The napco store closed . Pep boys sells dayco and they can't cross reference

57chevyman · 01-10-2015, 04:16 PM

Maybe add some bling ...

OrrieG · 01-10-2015, 05:31 PM

At my computer, here are the hoses I used. My radiator is in stock 6 cylinder location, engine in V8 location. I attached photos, can't see all the lower, it goes down to clear the fan belts then straight back to the radiator..

The upper is a Gates 20416, I had to shorten the end that goes on the radiator. The lower is a Gates 20584, I had to shorten the radiator end on it too. The applications are not GM, I took in a bent wire and diameters. I got them at oreilys.

57chevyman · 01-10-2015, 05:51 PM

^ thanks for the info guys ! Those fancy hoses won't work for me , shortest one is 20" my upper hose is 14.5 inches. A nice smooth black hose is all I want. That flex hose looks like something to attach to a washing machine LOL

57chevyman · 01-10-2015, 05:54 PM

Air cleaner.

mr48chev · 01-10-2015, 06:20 PM

The 20416 fits a lot of different rigs so it should be in stock. Each rig having it's own cut here/cut there requirements.

The 20242 is the lower for a car but it looks too short. Take a look at a 20345 lower hose and see what you think.

57chevyman · 01-10-2015, 06:50 PM

My lower hose

57chevyman · 01-10-2015, 09:30 PM

Quote:

Originally Posted by OrrieG

At my computer, here are the hoses I used. My radiator is in stock 6 cylinder location, engine in V8 location. I attached photos, can't see all the lower, it goes down to clear the fan belts then straight back to the radiator..

The upper is a Gates 20416, I had to shorten the end that goes on the radiator. The lower is a Gates 20584, I had to shorten the radiator end on it too. The applications are not GM, I took in a bent wire and diameters. I got them at oreilys.

Thanks man, with these numbers and the napco numbers, i should be on the right track.

your exhaust manifolds look great, are they new ones or old ones cleaned up?

OrrieG · 01-10-2015, 11:07 PM

Original ramshorns, cleaned and coated with POR "cast iron" hi temp coating.

57chevyman · 01-11-2015, 12:08 PM

^ very nice

_Ogre · 01-11-2015, 03:13 PM

if nothing fits your application you can do like an ogre does

buy a 45* ss exhaust tube and use rubber couplers on each end
i couldn't find a hose to go around my air cleaner and back to the stock neck
lmc and brothers only sell the convoluted hose, though i called both to confirm it was smooth
they both sent the convoluted
not a fan of the chrome hose covers either

also did my lower hose this way with my fan temp sensor in the lower hose

_Ogre · 01-11-2015, 03:18 PM

you can buy 1.5'' 45* and 60* bends from summit or any supplier

summitracing.com

57chevyman · 01-11-2015, 03:28 PM

Ogre, that looks slick the way you did that . I'm gonna keep mine the way it is, just want to replace the ribbed hose with a smooth one .probably swap the water neck for a chrome one and stick with the one that points straight towards the front

57chevyman · 01-11-2015, 03:44 PM

Quote:

Originally Posted by _Ogre

you can buy 1.5'' 45* and 60* bends from summit or any supplier

summitracing.com

Hey did you have to flare the ends of the metal pipe ?

57chevyman · 01-11-2015, 05:13 PM

Passed by an autozone ... They cross referenced the gates # . Got a nice hose that will work for the upper. Nothing in stock for my lower.

57chevyman · 01-11-2015, 05:41 PM

Nice . Upper hose swapped . Decided to swap the hose quick and save the water neck swap for another day . The is a dayco 70344 trimmed at both ends

mr48chev · 01-11-2015, 06:08 PM

Much improved over the flex hose.

57chevyman · 01-11-2015, 07:15 PM

Thank you. Yea it looks a lot nicer

72Mountaineer · 11-10-2015, 10:21 PM

Quote:

Originally Posted by va4cqd

try a napa NBH-7240 for upper and NBH-7438 for lower. both will need trimming

What are the diameters of these? My upper hose is 1 1/4" (both ends) and my lower is 1 1/4" on the radiator end and 1 3/4" on the pump end.

mr48chev · 11-11-2015, 03:50 PM

In a thread on the HAMB someone suggested using a length of cardboard defroster hose or the metalized heat to air cleaner tube to get the shape of the hose so you can go hose hunting at the parts house.

A lots of time on an upper hose you might be needing to take the section out of the middle of a longer hose the right diameter with several bends in it.

01-10-2015, 11:59 AM	#1
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Radiator hose Hey guys , can someone give me a part # for the upper radiator hose that I need ? Want to replace this "flex hose" with a nice new smooth hose. Attached Images __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

01-10-2015, 12:09 PM	#2
Highsider Registered User Join Date: Jun 2012 Location: Southern Iowa Posts: 944	Re: Radiator hose I am sure someone will pop in with the number. I have a nice, smooth, molded NAPA hose, that I must have trimmed the length, as there is no number. __________________ Jimi J from I-Oh-Way '57 Panel 3105 Met this deer... Roof Swap on my Panel Jim's Bread Truck

01-10-2015, 02:17 PM	#3
va4cqd Registered User Join Date: Aug 2008 Location: canada Posts: 87	Re: Radiator hose try a napa NBH-7240 for upper and NBH-7438 for lower. both will need trimming

01-10-2015, 02:41 PM	#4
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Re: Radiator hose Thank you __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

01-10-2015, 03:00 PM	#5
OrrieG Registered User Join Date: Jun 2006 Location: Idaho Posts: 8,800	Re: Radiator hose There are Gates # in my build thread towards the middle. __________________ 1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project

01-10-2015, 03:55 PM	#6
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Re: Radiator hose Anyone have a Dayco cross reference ? The napco store closed . Pep boys sells dayco and they can't cross reference __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

01-10-2015, 04:16 PM	#7
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Re: Radiator hose Maybe add some bling ... Attached Images __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

01-10-2015, 05:31 PM	#8
OrrieG Registered User Join Date: Jun 2006 Location: Idaho Posts: 8,800	Re: Radiator hose At my computer, here are the hoses I used. My radiator is in stock 6 cylinder location, engine in V8 location. I attached photos, can't see all the lower, it goes down to clear the fan belts then straight back to the radiator.. The upper is a Gates 20416, I had to shorten the end that goes on the radiator. The lower is a Gates 20584, I had to shorten the radiator end on it too. The applications are not GM, I took in a bent wire and diameters. I got them at oreilys. Attached Images __________________ 1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project

01-10-2015, 05:51 PM	#9
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Re: Radiator hose ^ thanks for the info guys ! Those fancy hoses won't work for me , shortest one is 20" my upper hose is 14.5 inches. A nice smooth black hose is all I want. That flex hose looks like something to attach to a washing machine LOL __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

01-10-2015, 05:54 PM	#10
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Re: Radiator hose Air cleaner. Attached Images __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

01-10-2015, 06:20 PM	#11
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,282	Re: Radiator hose The 20416 fits a lot of different rigs so it should be in stock. Each rig having it's own cut here/cut there requirements. The 20242 is the lower for a car but it looks too short. Take a look at a 20345 lower hose and see what you think. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

01-10-2015, 06:50 PM	#12
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Re: Radiator hose My lower hose Attached Images __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

01-10-2015, 11:07 PM	#14
OrrieG Registered User Join Date: Jun 2006 Location: Idaho Posts: 8,800	Re: Radiator hose Original ramshorns, cleaned and coated with POR "cast iron" hi temp coating. __________________ 1959 Chevy Short Fleetside w/ 74 4WD drive train (current project) OrrieG Build Thread 1964 Chevelle Malibu w/ 355-350TH (daily driver) Helpful AD and TF Manual Site Old Car Manual Project

01-11-2015, 12:08 PM	#15
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Re: Radiator hose ^ very nice __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

01-11-2015, 03:13 PM	#16
_Ogre Registered User Join Date: Jan 2012 Location: Motown Posts: 7,666	Re: Radiator hose if nothing fits your application you can do like an ogre does buy a 45* ss exhaust tube and use rubber couplers on each end i couldn't find a hose to go around my air cleaner and back to the stock neck lmc and brothers only sell the convoluted hose, though i called both to confirm it was smooth they both sent the convoluted not a fan of the chrome hose covers either also did my lower hose this way with my fan temp sensor in the lower hose __________________ cool, an ogre smiley Ogre's 58 Truk build how to put your truck year and build thread into your signature shop air compressor timer



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01-11-2015, 03:18 PM	#17
_Ogre Registered User Join Date: Jan 2012 Location: Motown Posts: 7,666	Re: Radiator hose you can buy 1.5'' 45* and 60* bends from summit or any supplier summitracing.com __________________ cool, an ogre smiley Ogre's 58 Truk build how to put your truck year and build thread into your signature shop air compressor timer

01-11-2015, 03:28 PM	#18
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Re: Radiator hose Ogre, that looks slick the way you did that . I'm gonna keep mine the way it is, just want to replace the ribbed hose with a smooth one .probably swap the water neck for a chrome one and stick with the one that points straight towards the front __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

01-11-2015, 05:13 PM	#20
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Re: Radiator hose Passed by an autozone ... They cross referenced the gates # . Got a nice hose that will work for the upper. Nothing in stock for my lower. __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

01-11-2015, 05:41 PM	#21
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Re: Radiator hose Nice . Upper hose swapped . Decided to swap the hose quick and save the water neck swap for another day . The is a dayco 70344 trimmed at both ends Attached Images __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

01-11-2015, 06:08 PM	#22
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,282	Re: Radiator hose Much improved over the flex hose. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

01-11-2015, 07:15 PM	#23
57chevyman Registered User Join Date: Oct 2013 Location: Massapequa Park, NY Posts: 873	Re: Radiator hose Thank you. Yea it looks a lot nicer __________________ Frank 1957 Chevy 3100 2000 Silverado z71 SOLD 2012 Ram 1500 Quad Cab 1992 International 4700

11-11-2015, 03:50 PM	#25
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,282	Re: Radiator hose In a thread on the HAMB someone suggested using a length of cardboard defroster hose or the metalized heat to air cleaner tube to get the shape of the hose so you can go hose hunting at the parts house. A lots of time on an upper hose you might be needing to take the section out of the middle of a longer hose the right diameter with several bends in it. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

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