Harmonic Balancer Bolt
Thread Starter
Racer
Joined: Aug 2009
Posts: 340
Likes: 2
Harmonic Balancer Bolt
Quick question, relating to my other thread but I decided this warranted its own thread for future searching purposes. Autozone didn't carry the LS1 harmonic balancer bolt, but they had one for just "Small Block Chevy"
I'm assuming this is for the old generation GM engines, but are the bolts any different/interchangeable?
I'm assuming this is for the old generation GM engines, but are the bolts any different/interchangeable?
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
No other NON LS damper bolt will work. Its a unique LS series engine, one time use bolt. 
Available at the dealer or thru Gene Culley www.gmpartshouse.com
If I were you,,,I would install the ARP bolt!!! Its a stout piece and wont fail!
Available at the dealer or thru Gene Culley www.gmpartshouse.com If I were you,,,I would install the ARP bolt!!! Its a stout piece and wont fail!
Le Mans Master
Joined: Oct 2006
Posts: 6,080
Likes: 0
From: Houston TX
Crankshaft Balancer Bolt (Installation Pass-to Ensure the Balancer is Completely Installed) 240 lb ft
Crankshaft Balancer Bolt (First Pass-Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes) 37 lb ft
Crankshaft Balancer Bolt (Final Pass) 140 degrees
Use loctite on the new bolt, and get the new bolt from the dealer.
Crankshaft Balancer Bolt (First Pass-Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes) 37 lb ft
Crankshaft Balancer Bolt (Final Pass) 140 degrees
Use loctite on the new bolt, and get the new bolt from the dealer.
Safety Car
Joined: Jul 2005
Posts: 3,572
Likes: 9
From: Jackson Tn
St. Jude Donor '06-'07-'08-'09
Crankshaft Balancer Bolt (Installation Pass-to Ensure the Balancer is Completely Installed) 240 lb ft
Crankshaft Balancer Bolt (First Pass-Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes) 37 lb ft
Crankshaft Balancer Bolt (Final Pass) 140 degrees
Use loctite on the new bolt, and get the new bolt from the dealer.
Crankshaft Balancer Bolt (First Pass-Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes) 37 lb ft
Crankshaft Balancer Bolt (Final Pass) 140 degrees
Use loctite on the new bolt, and get the new bolt from the dealer.
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Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
The original bolt it a TORQUE-TO-YIELD bolt. The final sequence it to turn the bolt a certain # of degrees past the last torque setting. This STRETCHES the bolt to keep it n place so no loctitie is needed on a bolt like this. This is why you can't REUSE the bolt. A reusable aftermarket bolt is a different story
Safety Car
Joined: Apr 2000
Posts: 4,326
Likes: 140
From: Weatherford, TX
The service manual doesn't call for threadlock on this bolt. The GM bolt has a form of it on the back of the bolt. If you put threadlock on, it will keep it from coming out, ever. I made this error once, and yeah my bolt stayed in. Later, I had some work done and the shop spent hours trying to remove that bolt. It almost didn't come out... They had to chase the threads after, to get it all out. A new ARP bolt went in, and they call for anti sieze.
