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 water pump on LT1

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frederickflintstone

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Join date : 2014-07-01
Location : Mid-Michigan

PostSubject: water pump on LT1   Wed Mar 07, 2018 12:53 pm

last fall I went on aggressive flushing campaign in order to get the heat working better. in the process I developed a leak dead center in the front of the engine. I assume it is the water pump. How difficult is it to replace the water pump on the LT1? does the opti-spark have to come out?

any tips or tricks?
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dmg4

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PostSubject: Re: water pump on LT1   Wed Mar 07, 2018 1:28 pm

I'd check the hose connections at the pump first for drips, unless you see coolant leaking from the gasket or shaft.

It's not difficult to replace the pump, and it's not necessary to touch the Optispark in the process. Even I did it without a screw up.

Does yours have the clutch driven metal fan or electric fans?
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frederickflintstone

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PostSubject: Re: water pump on LT1   Wed Mar 07, 2018 2:04 pm

dmg4 wrote:
I'd check the hose connections at the pump first for drips, unless you see coolant leaking from the gasket or shaft.

It's not difficult to replace the pump, and it's not necessary to touch the Optispark in the process.  Even I did it without a screw up.

Does yours have the clutch driven metal fan or electric fans?

I believe it has both fans, I know it has the engine driven fan. pretty sure it is not a hose, but of course I will check before i order parts.
I am glad I dont have to remove the opti-spark.
I will check it out more when the weather warms up.
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Sprocket

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PostSubject: Re: water pump on LT1   Wed Mar 07, 2018 7:59 pm

It's pretty easy. If your Opti cap and rotor has NOT been replaced, 145K would be a good time to do it. just the cap and rotor. It's right there once the water pump is off.... just saying
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frederickflintstone

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PostSubject: Re: water pump on LT1   Thu Mar 08, 2018 9:37 am

Sprocket wrote:
It's pretty easy.   If your Opti cap and rotor has NOT been replaced, 145K would be a good time to do it.  just the cap and rotor.   It's right there once the water pump is off....  just saying

thanks, I cant remember if I did that or not.

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phantom 309

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PostSubject: Re: water pump on LT1   Thu Mar 08, 2018 9:50 am

Sprocket wrote:
It's pretty easy.   If your Opti cap and rotor has NOT been replaced, 145K would be a good time to do it.  just the cap and rotor.   It's right there once the water pump is off....  just saying

Let sleeping dogs lie,.. i'm just saying
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jasonlachapelle

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PostSubject: Re: water pump on LT1   Sun Mar 11, 2018 2:51 pm

frederickflintstone wrote:
Sprocket wrote:
It's pretty easy.   If your Opti cap and rotor has NOT been replaced, 145K would be a good time to do it.  just the cap and rotor.   It's right there once the water pump is off....  just saying

thanks, I cant remember if I did that or not.

I'm pretty sure you'd remember if you did.
if you do pull the WP, make sure you replace the seal.
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frederickflintstone

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PostSubject: Re: water pump on LT1   Mon Mar 12, 2018 8:12 am

jasonlachapelle wrote:
frederickflintstone wrote:
Sprocket wrote:
It's pretty easy.   If your Opti cap and rotor has NOT been replaced, 145K would be a good time to do it.  just the cap and rotor.   It's right there once the water pump is off....  just saying

thanks, I cant remember if I did that or not.

I'm pretty sure you'd remember if you did.
if you do pull the WP, make sure you replace the seal.


what seal are you speaking of?
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jasonlachapelle

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PostSubject: Re: water pump on LT1   Mon Mar 12, 2018 4:44 pm

[You must be registered and logged in to see this link.]
waterpump and optispark seal. Found in Felpro timing cover gasket kit.
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homemade tool to install seal


you can watch this video to see how it's done: http//www.impalassforum.com/vBulletin/34-engine-problems-maintenance/250397-96-impala-camshaft-optispark-seals-replace-video-3.html
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