C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Underdrive pulley-what else?

Thread Tools
 
Search this Thread
 
Old Aug 26, 2013 | 10:31 PM
  #1  
jlaw1313@comcast.net's Avatar
jlaw1313@comcast.net
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2011
Posts: 420
Likes: 13
From: West Deptford NJ
Default Underdrive pulley-what else?

If the harmonic balancer requires replacement, what should be addressed before the new pulley is installed and pinned?
Reply
Old Aug 26, 2013 | 10:51 PM
  #2  
mobman's Avatar
mobman
Instructor
15 Year Member
All Eyes On Me
 
Joined: Jul 2008
Posts: 207
Likes: 3
From: Fort Walton Beach Florida
Default

are you pinning it for a supercharger?
Reply
Old Aug 27, 2013 | 07:11 AM
  #3  
jlaw1313@comcast.net's Avatar
jlaw1313@comcast.net
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2011
Posts: 420
Likes: 13
From: West Deptford NJ
Default

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.
Reply
Old Aug 27, 2013 | 12:22 PM
  #4  
The Void's Avatar
The Void
Instructor
 
Joined: Jun 2006
Posts: 107
Likes: 0
From: Siloam Springs AR
Default

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.
Reply
Old Aug 27, 2013 | 12:54 PM
  #5  
Bill Curlee's Avatar
Bill Curlee
Tech Contributor
Supporting Lifetime Gold
Veteran: Navy
25 Year Member
Liked
Community Favorite
 
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Default

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
Reply
Old Aug 27, 2013 | 10:19 PM
  #6  
jlaw1313@comcast.net's Avatar
jlaw1313@comcast.net
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2011
Posts: 420
Likes: 13
From: West Deptford NJ
Default

Great info Thanks guys.

2004 Coupe

Last edited by jlaw1313@comcast.net; Aug 28, 2013 at 07:06 AM.
Reply
Old Aug 28, 2013 | 12:05 AM
  #7  
newbs49's Avatar
newbs49
Instructor
10 Year Member
 
Joined: Oct 2012
Posts: 162
Likes: 0
From: N. Tonawanda NY
Default

Bill
is it true the LS6 chain damper has been discontinued?
Reply
Old Aug 28, 2013 | 12:17 AM
  #8  
Bill Curlee's Avatar
Bill Curlee
Tech Contributor
Supporting Lifetime Gold
Veteran: Navy
25 Year Member
Liked
Community Favorite
 
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Default

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
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Corvette vs The World: Every Model vs Closest Competitor

 Joe Kucinski
story-1

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-2

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-3

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-4

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-5

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-6

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-7

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-8

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
story-9

7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette

 Pouria Savadkouei
Old Aug 28, 2013 | 07:17 AM
  #9  
jlaw1313@comcast.net's Avatar
jlaw1313@comcast.net
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2011
Posts: 420
Likes: 13
From: West Deptford NJ
Default

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?
Reply
Old Aug 28, 2013 | 01:42 PM
  #10  
Katech_Zach's Avatar
Katech_Zach
Premium Supporting Vendor
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2005
Posts: 13,975
Likes: 980
From: Clinton Township MI
C7 of Year Finalist (track prepared) 2019
Default

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. :-)
__________________

Contact:
(e) zach@katechengines.com
Reply
Old Aug 28, 2013 | 04:36 PM
  #11  
Bill Curlee's Avatar
Bill Curlee
Tech Contributor
Supporting Lifetime Gold
Veteran: Navy
25 Year Member
Liked
Community Favorite
 
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Default

My 2002 LS6 was so, yours should be.
Reply

Get notified of new replies

To Underdrive pulley-what else?





All times are GMT -4. The time now is 09:01 AM.

story-0
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-1
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-2
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-3
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-4
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-5
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-6
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-7
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-8
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE
story-9
7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette

Slideshow: Check out these easy-to-install upgrades from Extreme Online Store that reshape the look and feel of the C6 Corvette.

By Pouria Savadkouei | 2026-03-23 17:00:27


VIEW MORE