6066 (1960-1966) GMC Truck Club Bitcoin now accepted here! 
Pay Dues
Pay Dues or become a Site Supporter
 



Go Back   6066 (1960-1966) GMC Truck Club > 6066 GMC Truck Club Forum > General Discussion


General Discussion Sit down and chat with fellow members! Any topics that don't fit other categories goes here.

Reply
 
Thread Tools
  #1  
Old November 30th, 2022, 09:59 PM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 305E, SM420
Posts: 237
Rep Power: 90
Prowbar has a spectacular aura aboutProwbar has a spectacular aura about
Default Upper radiator hose substitute

Searched on the forum for a possibly correct (molded) radiator hose for a '65 GMC. However, the Gates 20496 hose is now discontinued. The lower 20498 is still being made.

Does anyone have a good substitute for a molded radiator hose for a radiator with the upper opening on the right side? And the regular style coolant crossover (not the later version)

Thanks.
Reply With Quote
  #2  
Old December 1st, 2022, 12:23 AM
Funky61's Avatar
Funky61 Funky61 is offline
-= Dues Paid =-
 
Join Date: Jan 2013
Location: Corona, CA
Truck: 1961 Suburban 1962 GMC Utility
Posts: 1,072
Rep Power: 366
Funky61 is just really niceFunky61 is just really niceFunky61 is just really niceFunky61 is just really nice
Default Re: Upper radiator hose substitute

Is this any help?

https://6066gmcclub.com/showthread.p...=radiator+hose
__________________
1961 GMC Suburban 305A Overdrive
1962 GMC Utility 305D
Reply With Quote
  #3  
Old December 1st, 2022, 09:53 AM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 305E, SM420
Posts: 237
Rep Power: 90
Prowbar has a spectacular aura aboutProwbar has a spectacular aura about
Default Re: Upper radiator hose substitute

Unfortunately not. This is for the later style water crossover.
Reply With Quote
  #4  
Old December 1st, 2022, 01:57 PM
James James is offline
-= Extreme Supporter =-
 
Join Date: Jun 2013
Location: Greer, SC
Truck: 1964 GMC 1500 2wd
Age: 68
Posts: 380
Rep Power: 162
James will become famous soon enough
Default Re: Upper radiator hose substitute

Would this one work?

https://www.amazon.com/Continental-E...MC+1500+Series

https://www.amazon.com/dp/B005OUQX2A...v_ov_lig_dp_it
Reply With Quote
  #5  
Old December 1st, 2022, 05:54 PM
kknotts kknotts is offline
Member
 
Join Date: Jan 2013
Location: Ellisville Ms
Truck: 1963 GMC Stepside 1000
Age: 61
Posts: 41
Rep Power: 73
kknotts is on a distinguished road
Default Re: Upper radiator hose substitute

I took my old upper hose to my local NAPA store and we pulled three or four similar hoses. Found one that worked with a small amount of cut off. Near perfect fit and has been on with no issues for several years now. Unfortunately I did not record the part number. Might try this method.
Reply With Quote
  #6  
Old December 1st, 2022, 09:08 PM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 305E, SM420
Posts: 237
Rep Power: 90
Prowbar has a spectacular aura aboutProwbar has a spectacular aura about
Default Re: Upper radiator hose substitute

James: unfortunately not, it (Continental) is too large for the radiator. ACDelco hose discontinued. T-stat housing is 1.75", radiator inlet 1.5", Length of the current hose is about 19.4"

kknotts: might be my best bet. Unfortunately, I'm in the EU though. Most parts are for non-US cars.
Attached Images
File Type: jpg 20221201_183147.jpg (3.97 MB, Multiple views, 9 clicks)
File Type: jpg 20220825_130014.jpg (4.34 MB, Multiple views, 10 clicks)

Last edited by Prowbar; December 1st, 2022 at 09:15 PM.
Reply With Quote
  #7  
Old December 7th, 2022, 07:22 PM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 305E, SM420
Posts: 237
Rep Power: 90
Prowbar has a spectacular aura aboutProwbar has a spectacular aura about
Default Re: Upper radiator hose substitute

Update: I've just ordered a radiator hose on Rockauto. They had the correct lower hose for the V6, for the upper hose I chose CONTINENTAL 60702, which is a lower hose for a 1968 El Camino with a 350. I came across this hose by using Summit Racing's excellent product filter. Regarding dimensions and shape, it looks to be close, but we'll see.

I'll update this thread whenever I have the hose.
Reply With Quote
  #8  
Old December 13th, 2022, 11:29 PM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 305E, SM420
Posts: 237
Rep Power: 90
Prowbar has a spectacular aura aboutProwbar has a spectacular aura about
Default Re: Upper radiator hose substitute

Close... almost a sigar

The Continental 60702 is a close fit, but needs an extra slight twist on the radiator side. The length and the other bend look to be a good fit. I have no idea whether my thermostat housing is original. It is aluminum and has a 1.75" neck if that helps any. Can't find any markings on it.

Will see if I have to cut the hose to fit a small section of pipe in to offset the hose for the added twist or if it fits as is, without the hose twisting up. In the second picture I've manipulated the hose to create the extra twist (the first picture is as is)

Looks promising so far.

The lower radiator hose AC Delco 20028S looks to be a proper fit (as is expected)

More to follow, right now it is freezing here.
Attached Images
File Type: jpg 20221213_230425.jpg (3.52 MB, Multiple views, 9 clicks)
File Type: jpg 20221213_230447.jpg (3.20 MB, Multiple views, 8 clicks)
File Type: jpg 20221213_230517.jpg (4.20 MB, Multiple views, 7 clicks)
Reply With Quote
  #9  
Old December 14th, 2022, 02:35 AM
kknotts kknotts is offline
Member
 
Join Date: Jan 2013
Location: Ellisville Ms
Truck: 1963 GMC Stepside 1000
Age: 61
Posts: 41
Rep Power: 73
kknotts is on a distinguished road
Default Re: Upper radiator hose substitute

Looks real good! Happy that is working out for you.
Reply With Quote
  #10  
Old December 24th, 2022, 07:36 PM
Prowbar Prowbar is offline
Senior Member
 
Join Date: Dec 2020
Location: Friesland, the Netherlands
Truck: 1965 GMC 1500, 305E, SM420
Posts: 237
Rep Power: 90
Prowbar has a spectacular aura aboutProwbar has a spectacular aura about
Default Re: Upper radiator hose substitute

Good news!

I've gone ahead and test-fitted the radiator hose today. The hose fits almost perfectly, with a slight twist. Nothing that will restrict flow, though. The hose needs to be shortened approx. 7/16" to fit properly in my GMC. You could shorten it more but you will lose a portion of the 1.75" section, which needs to fit over the thermostat neck.

Attached are the pictures. The tape is where I've shortened the hose. I used tape for a straight cut and fitted a large socket to keep the hose from deforming when cutting. A standard Stanley knife was used to cut the hose.

In summary: for an upper radiator hose for the 66 and earlier models, use the CONTINENTAL 60702, and shorten the 1.75" section to approximately 7/16".

Hope this works on your projects, too. Put the Flexi hoses where they belong: in the dumpster.
Attached Images
File Type: jpg 20221224_123122.jpg (4.23 MB, Multiple views, 5 clicks)
File Type: jpg 20221224_122622.jpg (4.05 MB, Multiple views, 3 clicks)
File Type: jpg stock hose.jpg (3.97 MB, Multiple views, 4 clicks)
File Type: jpg 20221224_123132.jpg (4.73 MB, Multiple views, 4 clicks)
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
upper radiator hose bobdylan GMC V6 and V12 Engines 2 March 24th, 2015 04:55 AM
correct upper radiator hose available? GMCNUT GMC V6 and V12 Engines 6 June 7th, 2014 12:53 AM
Re: Upper radiator hose pipe Archiver Previous Forum Posts 0 July 16th, 2005 10:06 AM
Re: Upper radiator hose pipe Archiver Previous Forum Posts 0 July 16th, 2005 02:46 AM
Upper radiator hose pipe Archiver Previous Forum Posts 0 July 15th, 2005 02:04 AM


All times are GMT +1. The time now is 11:29 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd 751674575565|1673692140|0
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2023 DragonByte Technologies Ltd.