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[C2] Lower radiator hose question

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Old Nov 21, 2022 | 08:35 AM
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Default Lower radiator hose question

For a '65, What is the difference in lower radiator hose between the 327 and big block? Is it just that the hose for the big block is a little shorter? Reason I ask is that I just replaced my 327 with a Blueprint 383, but it has a long water pump on it, vs the original short pump, and the original hose is a little too long. Thinking about going with the hose meant for a big block.
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Old Nov 21, 2022 | 09:24 AM
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From what I remember, the small block lower hose has more bends in it where it goes past the belt and into the pump. You might want to look at some of the Corvette vendor's websites, and compare pictures of the two hoses, to see if you think the big block one might work. Small block Corvettes didn't use the long pump, so a small block pump hose from another year probably wouldn't be of much help either.

Last edited by gbvette62; Nov 21, 2022 at 06:52 PM.
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Old Nov 21, 2022 | 09:40 AM
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I've been trying to compare pics, but of course the pictures of the different hoses are in different orientations.
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Old Nov 21, 2022 | 09:43 AM
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Remove the long water pump and install a short pump. Problem solved then all the factory pulleys and brackets will work
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Old Nov 21, 2022 | 10:05 AM
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Originally Posted by gbvette62
From what I remember, the small block lower hose has more bends in it where it goes past the belt and into the pump. You might want to look at some of the Corvette vendor's websites, and compare pictures of the two hoses, to see if you think the big block one might work. Small block Corvettes didn't use the short pump, so a small block pump from another year probably wouldn't be of much help either.
Can you elaborate on that? My '60 and my '63 both have short pumps.
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Old Nov 21, 2022 | 11:22 AM
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Originally Posted by jim lockwood
Can you elaborate on that? My '60 and my '63 both have short pumps.
I believe the true measurement lands somewhere in between a short and long pump
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Old Nov 21, 2022 | 02:26 PM
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Originally Posted by 1FLY65
I believe the true measurement lands somewhere in between a short and long pump
I recently installed a Stewart EMP short waterpump on my 67 and all my brackets and pullies fit fine…. Same pump is used for Chevelles, etc…
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Old Nov 21, 2022 | 02:35 PM
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Originally Posted by 1FLY65
I believe the true measurement lands somewhere in between a short and long pump
That's a new one on me. I've heard of short pumps and long pumps but never anything in between. The cars I referenced have short pumps.
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Old Nov 21, 2022 | 03:27 PM
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Originally Posted by 1FLY65
I believe the true measurement lands somewhere in between a short and long pump
Must be one of those ultra rare Goldilocks water pumps.
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Old Nov 21, 2022 | 03:29 PM
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Sorry, I was referencing c3 water pumps. Doesn’t apply to c2.
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Old Nov 21, 2022 | 04:03 PM
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Originally Posted by 1FLY65
Sorry, I was referencing c3 water pumps. Doesn’t apply to c2.
dosent mater ALL corvettes used a short pump p
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Old Nov 21, 2022 | 04:17 PM
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Originally Posted by Nowhere Man
dosent mater ALL corvettes used a short pump p
IIRC, 1970 small block pumps went to a larger pilot, but otherwise the same length.
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Old Nov 21, 2022 | 04:51 PM
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Originally Posted by L78
IIRC, 1970 small block pumps went to a larger pilot, but otherwise the same length.
for reference ALL 55-91 vettes used the short style water pump BB and SB
all Chevy cars and trucks from 55-68 with a V8 used the short pump
in 1969 for V8 Chevelles, impalas, Camaros, and Novas went to the long pump while trucks and vettes kept the short pump

I see no need to reinvent the wheel here
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Old Nov 21, 2022 | 06:51 PM
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Originally Posted by jim lockwood
Can you elaborate on that? My '60 and my '63 both have short pumps.
Typo, it should have said "Corvettes didn't use the long pump". I was in a hurry and didn't bother proof reading it. Fixed now.
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Old Nov 21, 2022 | 07:09 PM
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Originally Posted by Nowhere Man
Remove the long water pump and install a short pump. Problem solved then all the factory pulleys and brackets will work
the easiest and smartest move, all the vendors and FLAPS have one.
make sure your new hose has the spring inside or transfer it over.
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