upper rad hose Ls swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sipper · 03-21-2016, 03:46 PM

I'm putting an ls with a corvette waterpump in a 67 C10 along with a Champion Radiator that has the upper rad hose on the Drivers side. The water pump being from a corvette has the hose coming out the front. A corvette upper rad hose almost fits, except it is too small to fit the rad.

Has anyone found an upper rad hose that will fit this combination?

sipper · 03-23-2016, 08:43 AM

No one has figured out a hose for this, or is everyone using the truck waterpumps?

The Chainsaw · 03-23-2016, 08:58 AM

I usually end up finding a straight spot in the hose, cut, add a piece of pipe, and find another radiator hose that I can cut to make the side for the radiator work.

It's a pain, but I also drill and tap a hole in that piece of pipe for the steam vent tube.

Aruba1 · 03-23-2016, 09:23 AM

I used the old LS hose and made it fit. This is when the upper outlet was on the driver side and also when I later switched to the outlet on the passenger side by recutting the same hose.

Oldblue68chevy · 03-23-2016, 09:59 AM

I will get you the number for the hose I used later today. I bought it at the local autozone. I just had to cut the end and then flare it a bit to fit over the radiator inlet. I am using and f body pump and a champion rad. I will also post a pic of it.

sipper · 03-23-2016, 10:14 AM

Thanks for the reply's
OldBlue sounds like you have the same setup as me. The part number and a pic would be much appreciated.

DBK81 · 03-23-2016, 10:23 AM

Soak it in hot hot water for 5 min, this will make all the difference. It will fit.

Oldblue68chevy · 03-23-2016, 10:27 AM

I was going to suggest the same thing DBK81 said. Even the one I bought needed cut and expanded. Hot water will get it flexible and it will slip right on.

davepl · 03-23-2016, 12:45 PM

I'm going to swap over to a Ron Davis radiator due to this (I don't want a really long radiator hose that would result from transporting the coolant all the way to the other side) and the steam vent stuff. But I'd be curious to see a pic of anyone who's done it (well, of the rad, not the person).

Oldblue68chevy · 03-23-2016, 04:52 PM

Here are pics of my upper hose. 71425 at autozone. Also note that my engine is moved back as far as the slider mounts would allow.

davepl · 03-23-2016, 05:40 PM

Not sure if it'd clear my planned accessory drive, but that's not too bad!

Oldblue68chevy · 03-23-2016, 05:47 PM

Yeah I am running the f-body pump with truck accessories.

sipper · 03-23-2016, 06:02 PM

Thanks for the replies it helps a lot

03-21-2016, 03:46 PM	#1
sipper Registered User Join Date: Oct 2015 Location: wyoming ontario Posts: 40	upper rad hose Ls swap I'm putting an ls with a corvette waterpump in a 67 C10 along with a Champion Radiator that has the upper rad hose on the Drivers side. The water pump being from a corvette has the hose coming out the front. A corvette upper rad hose almost fits, except it is too small to fit the rad. Has anyone found an upper rad hose that will fit this combination?

03-23-2016, 08:43 AM	#2
sipper Registered User Join Date: Oct 2015 Location: wyoming ontario Posts: 40	Re: upper rad hose Ls swap No one has figured out a hose for this, or is everyone using the truck waterpumps?

03-23-2016, 08:58 AM	#3
The Chainsaw Registered User Join Date: Nov 2015 Location: Orland, CA Posts: 103	Re: upper rad hose Ls swap I usually end up finding a straight spot in the hose, cut, add a piece of pipe, and find another radiator hose that I can cut to make the side for the radiator work. It's a pain, but I also drill and tap a hole in that piece of pipe for the steam vent tube.

03-23-2016, 09:23 AM	#4
Aruba1 Registered User Join Date: Apr 2014 Location: Birmingham, AL Posts: 560	Re: upper rad hose Ls swap I used the old LS hose and made it fit. This is when the upper outlet was on the driver side and also when I later switched to the outlet on the passenger side by recutting the same hose.

03-23-2016, 09:59 AM	#5
Oldblue68chevy Registered User Join Date: May 2014 Location: Freedom Pa Posts: 139	Re: upper rad hose Ls swap I will get you the number for the hose I used later today. I bought it at the local autozone. I just had to cut the end and then flare it a bit to fit over the radiator inlet. I am using and f body pump and a champion rad. I will also post a pic of it.

03-23-2016, 10:14 AM	#6
sipper Registered User Join Date: Oct 2015 Location: wyoming ontario Posts: 40	Re: upper rad hose Ls swap Thanks for the reply's OldBlue sounds like you have the same setup as me. The part number and a pic would be much appreciated.

03-23-2016, 10:23 AM	#7
DBK81 Registered User Join Date: Jan 2016 Location: Saskatchewan Posts: 357	Re: upper rad hose Ls swap Soak it in hot hot water for 5 min, this will make all the difference. It will fit. __________________ 1972 C10 - It might be old, but it's not slow

03-23-2016, 10:27 AM	#8
Oldblue68chevy Registered User Join Date: May 2014 Location: Freedom Pa Posts: 139	Re: upper rad hose Ls swap I was going to suggest the same thing DBK81 said. Even the one I bought needed cut and expanded. Hot water will get it flexible and it will slip right on.

03-23-2016, 12:45 PM	#9
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: upper rad hose Ls swap I'm going to swap over to a Ron Davis radiator due to this (I don't want a really long radiator hose that would result from transporting the coolant all the way to the other side) and the steam vent stuff. But I'd be curious to see a pic of anyone who's done it (well, of the rad, not the person). __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

03-23-2016, 04:52 PM	#10
Oldblue68chevy Registered User Join Date: May 2014 Location: Freedom Pa Posts: 139	Re: upper rad hose Ls swap Here are pics of my upper hose. 71425 at autozone. Also note that my engine is moved back as far as the slider mounts would allow. Attached Images

03-23-2016, 05:40 PM	#11
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: upper rad hose Ls swap Not sure if it'd clear my planned accessory drive, but that's not too bad! __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

03-23-2016, 05:47 PM	#12
Oldblue68chevy Registered User Join Date: May 2014 Location: Freedom Pa Posts: 139	Re: upper rad hose Ls swap Yeah I am running the f-body pump with truck accessories.

03-23-2016, 06:02 PM	#13
sipper Registered User Join Date: Oct 2015 Location: wyoming ontario Posts: 40	Re: upper rad hose Ls swap Thanks for the replies it helps a lot



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.