Which water pump for a '95 LT1?

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Sep 17, 2004 | 05:10 PM

odysseysteve

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From: San Diego California

Which water pump for a '95 LT1?

Weep hole water leak which has messed up my belt and is threatening my opti has me scrambling to find the best water pump for the money. Looking for your opinions and experiences. Thanks!

Sep 17, 2004 | 05:16 PM

STL94LT1

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From: O'Fallon Missouri

Meziere Electric Water Pump

You don't have alot of choices with the LT1 waterpump. OEM, rebuilt OEM, or electric.

I'm running the Meziere HD electric water pump, and very satisfied with it's performance.

Sep 17, 2004 | 05:51 PM

odysseysteve

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From: San Diego California

Which water pump for a '95 LT1?

Thanks for the reply, STL94LT1. That's what I was afraid of. Did you do the install of the Meziere HD yourself? How tough a job is that?

Sep 17, 2004 | 05:58 PM

STL94LT1

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From: O'Fallon Missouri

Yes, I installed the Meziere. It really isn't that difficult. You reuse your stock water pump housing, the Meziere bolts to the front.

Sep 17, 2004 | 06:13 PM

Pony_Express_Driver

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From: Overland Park Ks

Go Mezzaire

Go the Mezzaire. It does a great job. While you are there..hook up a Delteq unit to your Opticrap and never have to worry about it again.

Frank

Sep 17, 2004 | 06:32 PM

reed62783

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Joined: Jul 2004

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From: Jonesboro AR

hook up what to the opti? i am getting the work done (waterpump) next week and i am trying to get everything that may need to be done done.

Sep 17, 2004 | 09:55 PM

CF6873

Melting Slicks

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From: Lancaster PA

What are the advantages of the electric pump? Thanks, Craig

Sep 18, 2004 | 01:47 AM

redbullapril23

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From: atlanta Georgia

well since it has a pulley it takes hp to turn it having electric doesnt take hp! correct me if im wrong....
I just wonder if i went with under drive crank and over drive alt and electric if thatd be ok? would the volts get to low..i only dring during day and now rain... and no radio.... no wipers no lights no radio!
thanks
Sean

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Sep 18, 2004 | 08:59 AM

STL94LT1

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From: O'Fallon Missouri

No Pulley

Quote:

Originally Posted by redbullapril23

well since it has a pulley it takes hp to turn it having electric doesnt take hp!

There is no pulley on the stock LT1 water pump, it is driven off the top timing gear. But, you are right, it does use horsepower.

Sep 18, 2004 | 11:53 AM

#10

John Row

Melting Slicks

Joined: May 2001

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From: San Diego CA

Quote:

Originally Posted by redbullapril23

well since it has a pulley it takes hp to turn it having electric doesnt take hp! correct me if im wrong....

An electric pump does take HP. Nothing is free. It takes less HP since it turns at a constant speed regardless of the engine speed. Since it turns at a constant speed, the impeller can be made to be most efficient at that speed. Dyno test have shown that it provides 8-12HP gain depending on the engine RPM. It runs at an equivalent 4500-4800RPM standard water pump output. If you do lots of 4500RPM driving, it would run short of capacity after awhile.

There is a tech tip on how to install it. You'll need to pull the pump housing completely to install it. Not difficult, just a bit awkward getting to a couple of the bolts. First time is about a 3-5 hour job.

Just be sure to use at least a 30AMP relay.

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