Harmonic balancer
Racer
Joined: Sep 2012
Posts: 301
Likes: 0
From: Palmetto FL
St. Jude Donor '13
Having buult racing engines, (and drag racing professionally forever) we have tried so many and always have gone back to ATI. Nothing compares even though many have good luck w/others...ATI is the standard and thats all we will use.
:thumbsup:
:thumbsup:
Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
If it was me, I would just buy the best and never think about it again. If the stock unit fails because it is junk, then why would you replace junk with junk. Buy the best and do it right the first time. A few $100.00 saved may cost you a lot more in the long run. As always, each to their own.
Thread Starter
Le Mans Master
Joined: Sep 2005
Posts: 5,520
Likes: 534
From: Hampshire, IL
Thanx to all for the info. I keep my cars a long time , so I think I will pop for the ATI.
Why do I need a new blot? does removing the old one damage it.
Which to purchase from Summit or Jegs?
Why do I need a new blot? does removing the old one damage it.
Which to purchase from Summit or Jegs?
Melting Slicks
Joined: May 2010
Posts: 2,037
Likes: 331
From: Long Island New York
The bolts are made for one time use only, have to get a new one. You can buy the OEM GM bolt and washer for about $6 or go for the better aftermarket ARP bolt and washer for around $33....if you order from Summit the ATI with no underdrive and the ARP bolt was $484 total delivered. I, like you, went for the best....
Instructor
Joined: Oct 2010
Posts: 231
Likes: 0
From: Belleville Illinois
I am going through this problem now. I'm going to have to try the OEM replacement from my dealer though and although I am concerned I just need to go the cheaper route right now. My 07 is out of the 5 year warranty period with 21K miles. My service guy checked for GM assistance for me and the installed price with new belts, bolt, and tax is $538. He said that it is a 7-8 hour job----at $125/hour plus parts and tax. That would probably put me over $1400. Its great GM stepped up but it had to be an OEM balancer. I guess I'm rolling the dice and maybe I'll pay for it later---maybe not. I'm going to Key West for a couple weeks next month and have booked a 4 day offshore fishing trip so the funds are tapped right now. I called the dealer today, the parts are in stock, and I will be rolling again in 2 days ready for the 60 degree weather forecast later this week.
Thread Starter
Le Mans Master
Joined: Sep 2005
Posts: 5,520
Likes: 534
From: Hampshire, IL
Went to the dealer & they will not replace a 3rd one for free. My buddy will order the ati & install it for a lower charge, Thanx for all the info.
By the way --- my 78 trans am still has the original hb on it after 36 years !!! New & improved by G M is not always better !
By the way --- my 78 trans am still has the original hb on it after 36 years !!! New & improved by G M is not always better !
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Melting Slicks
Joined: Apr 2007
Posts: 2,987
Likes: 16
From: Phoenix
The Summit C2501 is what A&A told me to use for stock size SFI balancer. Works on LS1/2/3/6 wet sump cars. They said they have guys in the 9's with that balancer.
http://www.summitracing.com/parts/sum-c2501
http://www.summitracing.com/parts/sum-c2501
Instructor
Joined: Apr 2008
Posts: 142
Likes: 1
From: Howell NJ
just checked mine today...06 22K miles, 7 track days...wobble wobble wobble. Funny, it started to chirp today also, honestly never heard that before today. Amazing how everyone's HB seems to be bad after reading these recent threads!
Instructor
Joined: Jan 2013
Posts: 175
Likes: 1
From: Ashland Va.
Guys; Sorry to hear there are more of you with this problem. If you have not already posted in this poll, please do. Thanks. http://forums.corvetteforum.com/c6-c...re-poll-7.html
Heel & Toe
Joined: Jul 2013
Posts: 17
Likes: 0
From: Laguna Niguel California
I thought my Harmonic Balancer had a problem, it was squeaking, then it would'nt squeak, then it would. I put on a new OEM belt and there was this sound like a nut bouncing around in a spinning cylinder. The new belt was putting TOO MUCH PRESSURE on the crank shaft pulley. I put the old belt back on and ... QUIET! Some belts are better that others, but if you have too much pressure on the main pulley you get the squeaking or knocking sound.