LS2 Timing Chain identification/ dimensions
In the middle of a cam swap, on my 2004 GTO with a build date of 08/2004. I forget the cutoff date...somewhere in 2004 all LS1's got the LS2 chain...or so I read on one of these forums.
Car only has 7,000 miles on it so I don't see the need to change the chain....assuming it is an LS2. I have seen the other posts...but without a side by side I am a little in the dark here.
Anyone know what the link thickness difference is? Or any other way to identify it?
Thanks
As an alternative, check out the pics in this thread. https://ls1tech.com/forums/generation-iii-internal-engine/391404-about-ls2-timing-chain.html They are accurate enough for comparison purposes. The LS2 chain links are quite a bit thicker, you should see the difference.
Last edited by Dan_the_C5_Man; Oct 13, 2005 at 10:41 PM.
As an alternative, check out the pics in this thread. https://ls1tech.com/forums/showthread.php?t=391404 They are accurate enough for comparison purposes. The LS2 chain links are quite a bit thicker, you should see the difference.

using dial calipers, the link plate next to the roller is approx .071
tomorrow I will have the chain laying loose for a more accurate measurement but I think this is pretty close.
Thanks again.
using dial calipers, the link plate next to the roller is approx .071
tomorrow I will have the chain laying loose for a more accurate measurement but I think this is pretty close.
Thanks again.
Last edited by Dan_the_C5_Man; Oct 17, 2005 at 01:14 AM.


