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1971 small block radiator hose woes

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Old Mar 4, 2026 | 08:58 AM
  #1  
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Default 1971 small block radiator hose woes

After buying 2 different upper cooling hoses none of them fit my 1971 Small block with original A/C, PS, PB.
I have installed Champion radiator and both of the hoses are too short.

Did anybody come across similar situation? Any suggestions?

Gates 20809
Gates 20809
Gates 20809
Gates 20809
AC Delco 24044L
AC Delco 24044L
AC Delco 24044L
AC Delco 24044L

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Old Mar 4, 2026 | 10:19 AM
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Do any of the new hoses match the prior hose?
Does the shape and position of the neck on the Champion radiator match the original radiator?
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Old Mar 4, 2026 | 10:27 AM
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Originally Posted by MelWff
Do any of the new hoses match the prior hose?
Does the shape and position of the neck on the Champion radiator match the original radiator?
This is the "old" setup before restoration. Hose looks the same. Champion radiator already installed.
Unfortunately I don't have the "original" hose anymore.


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Old Mar 4, 2026 | 10:30 AM
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Originally Posted by Primoz
This is the "old" setup before restoration. Hose looks the same. Champion radiator already installed.
Unfortunately I don't have the "original" hose anymore.

You don't have the old radiator to compare the neck?
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Old Mar 4, 2026 | 10:33 AM
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Originally Posted by MelWff
You don't have the old radiator to compare the neck?
No. Long gone unfortunately. Rotted completely.
But the upper hose on the picture is the same that was on the original copper radiator.
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Old Mar 4, 2026 | 10:54 AM
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This NAPA hose is 19.6", is that longer than the others?
Hose
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Old Mar 4, 2026 | 02:12 PM
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Originally Posted by MelWff
This NAPA hose is 19.6", is that longer than the others?
Hose
Same length!
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Old Mar 4, 2026 | 03:13 PM
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Custom hose?
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Old Mar 4, 2026 | 04:19 PM
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Try a 1977 Corvette hose.
That's what I ended up putting on my 68. I had to trim a skosh because it was too long so it may work for you. Just go to autozone and pick one up.... that way you can return it if it does not fit. Take your short hose and ask to see their 71 replacement and the 77 replacement...that way you can compare them in the store.


Originally Posted by Primoz
After buying 2 different upper cooling hoses none of them fit my 1971 Small block with original A/C, PS, PB.
I have installed Champion radiator and both of the hoses are too short.

Did anybody come across similar situation? Any suggestions?


Gates 20809

Gates 20809

AC Delco 24044L

AC Delco 24044L
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Old Mar 5, 2026 | 01:00 AM
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Maybe that champion radiator is for a big block and they sent you the wrong one.
Measure the width of the radiator.
I believe big block radiators are wider than a small block radiator.
Just a thought.
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Old Mar 5, 2026 | 07:10 AM
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Your car has no a/c and a plastic fan shroud? shouldn't it be a metal shroud? Doesnt look like the fan sits in the shroud at all. Perhaps the shroud and Radiator are not correct?
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Old Mar 5, 2026 | 11:41 AM
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Originally Posted by sleepchamber
Your car has no a/c and a plastic fan shroud? shouldn't it be a metal shroud? Doesnt look like the fan sits in the shroud at all. Perhaps the shroud and Radiator are not correct?
The car was original A/C, but I deleted it.
Plastic fan shroud is original.

The radiator is for a small block.
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Old Mar 5, 2026 | 12:47 PM
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This is the NAPA hose NBH7683, 19.6" long on a 1969.
Any chance the Gates hose had been trimmed and then returned, it should be 19 5/8" long?


Last edited by MelWff; Mar 5, 2026 at 01:29 PM.
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Old Mar 5, 2026 | 01:21 PM
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Originally Posted by MelWff
This is the NAPA hose NBH7683, 19.6" long on a 1969.
Any chance the Gates house had been trimmed and then returned, it should be 19 5/8" long?
That is exactly what I was thinking.
The AC Delco hose is almost 1/2" longer then gates one
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Old Mar 5, 2026 | 01:30 PM
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Originally Posted by Primoz
That is exactly what I was thinking.
The AC Delco hose is almost 1/2" longer then gates one
The Gates should be longer than the Delco.
Google the numbers and compare the length
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