don't think ou need the gears you cn order them but you don't need them to run the ls2 chain. but with whats going on i would order a new gears for top and bottom if cheap. just to make sure there is nothing wrong with them.

 

I really do think that in order to break that chain, you are gonna have to have those sprockets out of alignment. Got any pics of the chain itself? That may give a little insight to how the damn thing is breaking.

 

if would had broken 2 timing chains i would be putting a double roller timing i think u have to get a new front cover and shim the oil pump not sure.never had that problem

 

Even if it was a quad roller ,you need to address the cause of the failures,it shouldnt fail even with the cheapest chain set on the market.

 

Man I wish I knew why this happened......I saw that the chain had a couple of half links missing like if it was starting to break from different parts. I checked both the cam and bottom gear to see if it had side markings like if the chain was operating in a crooked kind of way but it seems normal. And the bottom gear was all the way in. If I could post a pic of the chain but I don't have a scanner....damn. This is just weird.

 

It sounds to me like the cam is walking allowing the chain to land on a timing gear tooth. Where are the marks on the chain? Engine side would say it's walking forward. I don't know LS engines but on mine I'd say the cam button is missing, all the shims fell out, or the cover is badly worn. Radiator-side chain marks say its walking backward. The brass cam plug in the back of the block may have been installed wrong. Maybe this will make sense to one of the LS guys.

 

does anyone have the part number for both gears and the LS2 chain so I can pick them up?

edit: found the chain number. and I have sprockets

 

12556582 $16.86 crankshaft sprocket
12586482 $27.75 chain
12576407 $22.62 camshaft sprocket

getting your homework done for free ......priceless.

go to gmpartsdirect.com type these in your good

 

LOL

thanks...

 

no problem.