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

chappys4life · Today, 01:41 PM

Getting ready to install a new champion radiator in my 70 gmc c1500. I figured out the top hose but having some issues with the lower. I see there are 2 options 1 with factory ac vs non ac. Mine was originally a non ac truck i believe but someone added classic air and switched to a later 1 piece seal block. I am looking at whats in the truck now but looks like it might not be right. Right now it looks like its a non ac hose (gates 20582) but the fit looks sketchy at best. Wondering if anyone knows a better hose to run.

**PbFut** · Today, 02:25 PM

Touching the frame will cut the hose in no time. Try rotating just one end or even both of the hose. You might get it off the frame. The hose is a cut to fit and may be too short

**70STOVEBOLT** · Today, 03:03 PM

Try this:

https://classicparts.com/1967-72-low...il.description

BRL · Today, 04:15 PM

Oh yea I've got some post or thread on this forum somewhere concerning the lower radiator hose but I don't know how to find it.
My engine sits back with the IL-6 frame mounts so that didn't help and I wound up double clamping the hose to the radiator after someone suggested I may have to trim it, which helped.
At any rate no matter what you end up doing I would suggest you cut a slit along a piece of fuel line to protect the hose from chafing against the frame.
I got those things all over the place and it helps me sleep better at night.

Today, 01:41 PM	#1
chappys4life Registered User Join Date: Oct 2008 Location: Austin, TX Posts: 89	Lower radiator hose Getting ready to install a new champion radiator in my 70 gmc c1500. I figured out the top hose but having some issues with the lower. I see there are 2 options 1 with factory ac vs non ac. Mine was originally a non ac truck i believe but someone added classic air and switched to a later 1 piece seal block. I am looking at whats in the truck now but looks like it might not be right. Right now it looks like its a non ac hose (gates 20582) but the fit looks sketchy at best. Wondering if anyone knows a better hose to run. Attached Images

Today, 02:25 PM	#2
PbFut Senior Member Join Date: Feb 2022 Location: Ca Posts: 680	Re: Lower radiator hose Touching the frame will cut the hose in no time. Try rotating just one end or even both of the hose. You might get it off the frame. The hose is a cut to fit and may be too short

Today, 03:03 PM	#3
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,489	Re: Lower radiator hose Try this: https://classicparts.com/1967-72-low...il.description __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Sliding Rear Window Power Windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear

Today, 04:15 PM	#4
BRL Registered User Join Date: Jun 2014 Location: Tahuya WA Posts: 647	Re: Lower radiator hose Oh yea I've got some post or thread on this forum somewhere concerning the lower radiator hose but I don't know how to find it. My engine sits back with the IL-6 frame mounts so that didn't help and I wound up double clamping the hose to the radiator after someone suggested I may have to trim it, which helped. At any rate no matter what you end up doing I would suggest you cut a slit along a piece of fuel line to protect the hose from chafing against the frame. I got those things all over the place and it helps me sleep better at night. Attached Images



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