Water pump question (long v. short)
Thread Starter
Pro
Joined: Sep 2004
Posts: 595
Likes: 0
From: Boston MA
Water pump question (long v. short)
Hello,
I have a question for you, I would like to know the difference between a short water pump and a long water pump? Which is better? why?
This is why:
I 1968 coupe with a rebuilt 327 engine (HT 327/350)
During the rebuild, I installed a short water pump by Weiand. The pump number is 8202.
Here is a link to it:
Current: http://store.summitracing.com/partde...4922128+302019
The Company also offers a long version:
Long: http://store.summitracing.com/partde...4922128+302019
As well as a corvette version.
My question is, Do you think the short version will work on this engine? Do you think that it will affect my cooling system negatively and if so how will it affect it and what symptoms should I look for? Should I have purchased the long or corvette versions of this pump? Ultimately do I have to purchase a new pump? (I hope the answer to this is no because I am running out of money)
Thanks in advance,
Joe
I have a question for you, I would like to know the difference between a short water pump and a long water pump? Which is better? why?
This is why:
I 1968 coupe with a rebuilt 327 engine (HT 327/350)
During the rebuild, I installed a short water pump by Weiand. The pump number is 8202.
Here is a link to it:
Current: http://store.summitracing.com/partde...4922128+302019
The Company also offers a long version:
Long: http://store.summitracing.com/partde...4922128+302019
As well as a corvette version.
My question is, Do you think the short version will work on this engine? Do you think that it will affect my cooling system negatively and if so how will it affect it and what symptoms should I look for? Should I have purchased the long or corvette versions of this pump? Ultimately do I have to purchase a new pump? (I hope the answer to this is no because I am running out of money)
Thanks in advance,
Joe
Thread Starter
Pro
Joined: Sep 2004
Posts: 595
Likes: 0
From: Boston MA
still confused
After doing some brief research, I have found that in 1968 the 327 engines had short waterpumps and they swithced to long waterpumps in 1969? DO you think it is still correct to have a short water pump on my engine or should I switch to a long?
Thread Starter
Pro
Joined: Sep 2004
Posts: 595
Likes: 0
From: Boston MA
Originally Posted by Ganey
Corvettes use the short water pump.
All the C3s use short water pumps? Or just the 1968?
What is the difference between the long and the short water pump?
Thanks,
Joe
Team Owner
Joined: Feb 1999
Posts: 34,455
Likes: 665
From: Republic of Texas
Originally Posted by 68coupe
Thanks for the reply.
All the C3s use short water pumps? Or just the 1968?
What is the difference between the long and the short water pump?
Thanks,
Joe
All the C3s use short water pumps? Or just the 1968?
What is the difference between the long and the short water pump?
Thanks,
Joe
ALL Corvettes, not just the '68. And the difference in the pump sizes is for clearance.
Last edited by Corey_68; Oct 18, 2004 at 12:36 PM.
Le Mans Master
Joined: Mar 2004
Posts: 7,502
Likes: 1,510
From: Little Rock AR
There is no advantage either way except for one of them will fit your car and the other one will not. The size of the snout might change over the years but consult a parts book to verify that.
-Mark.
-Mark.
Instructor
Joined: Nov 2003
Posts: 137
Likes: 5
From: Clifton NJ
I beleive the difference between a short and long water pump refers to the depth of the legs on either side of the pump where the mounting bolts go. The backside of a long water pump sits further away from the timing chain cover than a short pump does.
I can find no refernce to any performance difference between the 2 designs.
NJ BB Ken
I can find no refernce to any performance difference between the 2 designs.
NJ BB Ken
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Thread Starter
Pro
Joined: Sep 2004
Posts: 595
Likes: 0
From: Boston MA
Originally Posted by stingr69
There is no advantage either way except for one of them will fit your car and the other one will not. The size of the snout might change over the years but consult a parts book to verify that.
-Mark.
-Mark.
Melting Slicks
Joined: Sep 2002
Posts: 2,783
Likes: 2
From: Engineers do it better.
Originally Posted by BBNJKen
I beleive the difference between a short and long water pump refers to the depth of the legs on either side of the pump where the mounting bolts go. The backside of a long water pump sits further away from the timing chain cover than a short pump does.
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
Originally Posted by 68coupe
Hello,
I have a question for you, I would like to know the difference between a short water pump and a long water pump? Which is better? why?
This is why:
I 1968 coupe with a rebuilt 327 engine (HT 327/350)
During the rebuild, I installed a short water pump by Weiand. The pump number is 8202.
Here is a link to it:
Current: http://store.summitracing.com/partde...4922128+302019
The Company also offers a long version:
Long: http://store.summitracing.com/partde...4922128+302019
As well as a corvette version.
My question is, Do you think the short version will work on this engine? Do you think that it will affect my cooling system negatively and if so how will it affect it and what symptoms should I look for? Should I have purchased the long or corvette versions of this pump? Ultimately do I have to purchase a new pump? (I hope the answer to this is no because I am running out of money)
Thanks in advance,
Joe
I have a question for you, I would like to know the difference between a short water pump and a long water pump? Which is better? why?
This is why:
I 1968 coupe with a rebuilt 327 engine (HT 327/350)
During the rebuild, I installed a short water pump by Weiand. The pump number is 8202.
Here is a link to it:
Current: http://store.summitracing.com/partde...4922128+302019
The Company also offers a long version:
Long: http://store.summitracing.com/partde...4922128+302019
As well as a corvette version.
My question is, Do you think the short version will work on this engine? Do you think that it will affect my cooling system negatively and if so how will it affect it and what symptoms should I look for? Should I have purchased the long or corvette versions of this pump? Ultimately do I have to purchase a new pump? (I hope the answer to this is no because I am running out of money)
Thanks in advance,
Joe
Thread Starter
Pro
Joined: Sep 2004
Posts: 595
Likes: 0
From: Boston MA
Originally Posted by pws69
There are actually three versions: Long, Short, and Corvette
Do you think the short pump is incorrect, but still fits the block???
Not likely right?
Joe
Racer
Joined: Jul 2003
Posts: 401
Likes: 0
From: texas,, at last
guys,
i've the long pump (off my 1980 camaro) on my 77 vette,
maily because i wanted the location of the alternator to be on the passenger side so i could dip the power steering fluid easier and partly because it looks neater with the alternator over there,
just my 2 cents,
neil,
i've the long pump (off my 1980 camaro) on my 77 vette,
maily because i wanted the location of the alternator to be on the passenger side so i could dip the power steering fluid easier and partly because it looks neater with the alternator over there,
just my 2 cents,
neil,
Safety Car
Joined: Aug 2000
Posts: 3,711
Likes: 43
From: San Antonio TX
The second "short" smallblock Corvette pump is a '71 - '82 only pump. It's not exactly a short in that the dimensions are just slightly different from a traditional short smallblock pump and the pulley pilot diameter for this second pump is 3/4" while all pre '71 Corvette and all other smallblock short pumps are 5/8" diameter pilots. If you wanted to get real technical, there are also variations for what would be considered a "correct" pump that would include the provision for an external bypass.
And no, there is no performance difference. It all has to do with accessory drive setups.
And no, there is no performance difference. It all has to do with accessory drive setups.
