C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Which Water Pump Is Best???

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Old Jan 10, 2007 | 08:46 PM
  #1  
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Default Which Water Pump Is Best???

Hi everyone,
Well it looks like the water pump on my 1990 L98 is ready to take a dump, I think it is leaking and I can smell antifreeze. My question is, has any one used an Edelbrock, Kool Flow, or Stewart water pump. My car is stock, and will be staying that way for a while. Having said that, I would like the advantage of a better that stock water pump pushing water thru my engine, plus they are all new, vs rebuilt.

Any insight or experience will be welcomed. Thanks in advance for your help.

Randy
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Old Jan 10, 2007 | 10:12 PM
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I am using the Edelbrock Hi volume water pump.
works great.
Pumps 30% more water than stock.

Do they make one to fit your '90?

MAtt383
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Old Jan 11, 2007 | 12:44 AM
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I put a Stewart pump on my 87 L98. Stewart claims more gph than the Edelbrock. I bought it when my GM pump leaked to facilitate lower temps in summer. It works! $104 to my doorstep.
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Old Jan 11, 2007 | 01:42 AM
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Stewart
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Old Jan 11, 2007 | 05:21 AM
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What about FlowKooler?
I'm thinking to change the stock waterpump on my new 396.
I tought also an electric meziere water pump.... but my car is a L98 and I haven't found examples of electric Water Pumps on L98..
The FlowKooler site sdvertise 30% more flow only up to a certain rpm (3000 if I remember..), restoring the flow level as stock, over 3,000 rpm. It seems good to me.
Opinions?
-Beppe-
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Old Jan 11, 2007 | 08:38 PM
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Ttt
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Old Jan 11, 2007 | 11:40 PM
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Stewart Stage 1 here
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Old Jan 12, 2007 | 01:15 PM
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Edelbrock!! high flow temps stay around 180 with a 165 thermostat.
wro87
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Old Jan 12, 2007 | 01:36 PM
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Originally Posted by wro87
Edelbrock!! high flow temps stay around 180 with a 165 thermostat.
wro87
mine is the same one.
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Old Jan 12, 2007 | 07:59 PM
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Default Howard Stewart

Randy,

I have a like new Stewart ALlum. H2O pump for small block. If interested, contact me at
bbeckett5946@charter.net.

RGDS

Bob
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