the stock timing chains will hold up to a lot of power. hardened steel gears are some bad ****'s.

 

Here's a good comparison between a stock chain and an LS2
Looks like a lot of difference to me.

 

really the big difference is going to be in the grade of the steel. the thickness is the same throughout, as it appears to be. they look to be basically the same exact design, just the ls2 might be a weee bit beefier. steel specs would be good hard baseline data though


jake

 

after like 2004 all the 6.0l got the same timming chain. and are a direct replacement for all the othe lsx engs. if you 6.0 is before this time then yeah the ls2 one is bigger.