LS3 Timing Chain Failure :(
Thread Starter
TECH Regular
Joined: Dec 2004
Posts: 440
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From: Alpharetta, Ga
This sounds like the chain I just purchased. The man told me it was hand assembled and had hand picked links/pins, the pins were of a chrom alloy, it was pre-stretched, heat treated, the links were made from a stronger alloy, and shot peened.
He also told me it was "obsolete" due to no demand, but they still had a number of them in their facility due to them not selling. I purchased the unit from Summit Racing and they had to call Cloyes to activate the part number as they did not have it listed. Sounds we are buying whats left from the initial production run.
Thread Starter
TECH Regular
Joined: Dec 2004
Posts: 440
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From: Alpharetta, Ga
This article confirms I purchased the same "Renolds" chain. Check out the article on the right side of the picture where it refers to purchasing a timing set for all out racing. The timing set number is listed as 9-3153AL. If you look at that timing set at the top, it lists 9-194 as the chain for that timing set.
This sounds like the chain I just purchased. The man told me it was hand assembled and had hand picked links/pins, the pins were of a chrom alloy, it was pre-stretched, heat treated, the links were made from a stronger alloy, and shot peened.
He also told me it was "obsolete" due to no demand, but they still had a number of them in their facility due to them not selling. I purchased the unit from Summit Racing and they had to call Cloyes to activate the part number as they did not have it listed. Sounds we are buying whats left from the initial production run.
He also told me it was "obsolete" due to no demand, but they still had a number of them in their facility due to them not selling. I purchased the unit from Summit Racing and they had to call Cloyes to activate the part number as they did not have it listed. Sounds we are buying whats left from the initial production run.
Staging Lane
Joined: Dec 2006
Posts: 55
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Please tell me what the part number is that I need to use when order this timing set for an LS3. I am buying a new motor as a result of a second timing chain break. I want the best and am willing to pay for it.
FWIW - I broke an LS2 and a Rollmaster double. I road course the car without a TC dampner. I also was using a ASP underdrive. New motor is getting an ATI. I looked at my factory balancer and noticed that it was weighted as was my flywheel
EDIT: I just called Summit and they said it was a special order item. My motor is coming from LPE so I will see if they can source one for me
Last edited by Rob 's 73; Dec 18, 2008 at 03:04 PM.
Thread Starter
TECH Regular
Joined: Dec 2004
Posts: 440
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From: Alpharetta, Ga
According to the Cloyes rep I spoke with, the timing set will not work, but the chain alone will work on the stock gears of the LS3. Call Summit Racing and tell them you want part number 9-194. That is the chain that has been discussed in this thread.
Staging Lane
Joined: Dec 2006
Posts: 55
Likes: 0
I just called Summit again they do not have them. Cloyes does have 30-40 chains. Once they run out they will be out for a while. They do not regularly produce them. If you need one call Summit ext 5751 and Tom (I think) will set you up with a drop ship. Mine is on order.
Which gear set do I use? Factory LS3?
Which gear set do I use? Factory LS3?
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does anyone know for certain what aftermarket timing chain sets work with the GEN-IV cam gear timing sensors?
e.g. can anyone confirm that the Rollmaster double roller CS1195 and CS1190 timing sets have the timing sensor indents on the gears?
what about the Manley billett 73234? N-Motion/JP-Performance 7640/7645?
e.g. chain pitch, chain length, chain slack also?
i'm specifically looking for an upgraded timing chain set for a LS7 style long snout setup with the GM LS7 dry sump oil pump, and a few of the aftermarket timing chain sets don't look like they have the timing marks on the timing chain gear, which would lead to a long startup and limp mode on a GEN-IV car or something
_
e.g. can anyone confirm that the Rollmaster double roller CS1195 and CS1190 timing sets have the timing sensor indents on the gears?
what about the Manley billett 73234? N-Motion/JP-Performance 7640/7645?
e.g. chain pitch, chain length, chain slack also?
i'm specifically looking for an upgraded timing chain set for a LS7 style long snout setup with the GM LS7 dry sump oil pump, and a few of the aftermarket timing chain sets don't look like they have the timing marks on the timing chain gear, which would lead to a long startup and limp mode on a GEN-IV car or something
_
YES, its a drop in replacement for any stock LS.
Last edited by 405HP_Z06; Dec 21, 2008 at 09:30 AM.
I bought an ATI 10% under drive at Corvettes at Carlisle several years ago. One of their technicians was there and I spent some time talking with him. He told me they have not achieved the level of harmonic damping required with any under drive less than 10% and hence the reason they don't make it. If you look at one of ATI's support functions for NASCAR and other racing types, they actually have equipment that they use and will go to the engine builder and set up the damper for them on the fly. I guess the only reason I bring all this up is I personally believe the UD may play a role in this, along with the design of the timing chain damper. The folks who may have some good input on this subject would be Katech. While I am an advocate for a good quality timing chain as failure will wreak havoc with the motor, the chain may only be the symptom of another issue.
LS1Tech Sponsor
Joined: Feb 2006
Posts: 1,170
Likes: 1
From: Rockfield Kentucky
Kurt (427) has a ton of experiance with these deals. He talked about the harmonics earlier in this post.
If you read the ATI Catalog you will see that there are different durometer rubber O rings used in different applications.
I would call the techs at ATI and discuss this with them.
I don't have a problem with improving the parts but you may just be masking a bigger problem.
Robin
IN MY HUMBLE OPINION, concerning balancers I would only use ATI. I'm currently running the ATI 917278 10% UD Y-body balancer.
Last edited by 405HP_Z06; Dec 19, 2008 at 07:29 PM.
Spend the coin on the ATI and pin it while you're in there. The ATI has a keyway built in and uses a vertical pin. Here's a few pics of mine:
Crank drilled
Compared to stock
Seated on crank
All done
Crank drilled
Compared to stock
Seated on crank
All done
