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Underdrive pulley-what else?

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Old Aug 26, 2013 | 10:31 PM
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Default Underdrive pulley-what else?

If the harmonic balancer requires replacement, what should be addressed before the new pulley is installed and pinned?
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Old Aug 26, 2013 | 10:51 PM
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are you pinning it for a supercharger?
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Old Aug 27, 2013 | 07:11 AM
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Originally Posted by mobman
are you pinning it for a supercharger?
I don't think so. Probably cam, heads and header package at around 400 hp.
There is no reason yet to replace it yet other than the dampener is OEM and just does not look good, paint is peeling due to corrosion. I assumed if you are replacing the dampener you would pin it as part of the installation procedure.

Last edited by jlaw1313@comcast.net; Aug 28, 2013 at 07:09 AM.
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Old Aug 27, 2013 | 12:22 PM
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You may need a new power steering pulley. I swapped out the solid plastic one for the newer metal one where you can get back to the pump without pulling it off first. I think there is also another plastic version with a hole or 2 in it for the same reason.
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Old Aug 27, 2013 | 12:54 PM
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When you replace the dampener, there are several things that you should consider:

- Use an ARP Damper bolt. Its reuseable and the torque process is SIMPLE 240 ft/lbs and you are DONE!
The OEM bolt is a ONE TIME USE BOLT and requires a very specific critical torque procedure!

- Replace the OIL PUMP with a melling high Volume pump.

- Replace the timing chain with a LS2 chain.

Dont know what year C5 you have but, when you open up the timing chain cover, you may have drilled holes for a LS6 style timing chain dampener. If you do, I would purchase and install one!



BC
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Old Aug 27, 2013 | 10:19 PM
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Great info Thanks guys.

2004 Coupe

Last edited by jlaw1313@comcast.net; Aug 28, 2013 at 07:06 AM.
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Old Aug 28, 2013 | 12:05 AM
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Bill
is it true the LS6 chain damper has been discontinued?
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Old Aug 28, 2013 | 12:17 AM
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SOMEONE,,,,,,,,,, and I cant remember who,,,,,, has started re manufacturing them. Someone might chime in with new person who sells them.

I wish I could remember who is now selling them.

BC
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Old Aug 28, 2013 | 07:17 AM
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Originally Posted by Bill Curlee
SOMEONE,,,,,,,,,, and I cant remember who,,,,,, has started re manufacturing them. Someone might chime in with new person who sells them.

I wish I could remember who is now selling them.

BC
Looks like Katech Performance has a few:

http://store.katechengines.com/dampe...-ls6-p260.aspx

Bill, I have a 2004 Coupe. Would the block be machined to recieve the LS6 chain dampener?
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Old Aug 28, 2013 | 01:42 PM
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Originally Posted by newbs49
Bill
is it true the LS6 chain damper has been discontinued?
Originally Posted by Bill Curlee
SOMEONE,,,,,,,,,, and I cant remember who,,,,,, has started re manufacturing them. Someone might chime in with new person who sells them.

I wish I could remember who is now selling them.

BC
The LS6 timing chain damper was discontinued. We have all the stock in the galaxy. :-)
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(e) zach@katechengines.com
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Old Aug 28, 2013 | 04:36 PM
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My 2002 LS6 was so, yours should be.
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