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Old 10-10-2012, 08:47 PM   #76
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Hi Max, hang in there man. I'll be installing my cam this winter so I hope you'll answer this for me. Was this the stock timing chain? or was it an aftermarket chain? I've already decided that when I do the cam I am going to be replacing the timing chain and oil pump. I just need to determine which timing chain and gear set to go with. Feel free to PM me if you don't want this info made public.
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Old 10-10-2012, 08:48 PM   #77
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Duhhhhh! I was typing my post as yours was posted Max, thanks.
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Old 10-10-2012, 08:49 PM   #78
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Well, he did say that the valves need to be replaced.

John B.
I'm far from a mechanic so that's the cause of my assumption. The heads will need to be checked in case anything banged into them. I know that it's faster and easier for them to leave the cradle on the ground, raise the car, and work on it like that. At that point there isn't much more involved in having the entire engine apart. Of course, if the cam is the last mod I wouldn't bother forging the bottom. Maybe into doing the heads now though.
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Old 10-10-2012, 08:56 PM   #79
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SuperchargedSS, by your own admission, you may not be a mechanic, but you can drive the hell out of that car.

I would think this engine repair would be conducted largely by leaving the engine in the car and operating from the top, but if dropping the cradle is easier, so be it.

And since those heads are coming off, it would indeed be a great time to do some polishing and port matching if it hasn't already been done.

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Old 10-10-2012, 09:00 PM   #80
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Duhhhhh! I was typing my post as yours was posted Max, thanks.
No Prob. We are installing a Katech aftermarket chain. It was the stock one that failed.
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Old 10-10-2012, 09:04 PM   #81
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I was very happy with the car the way it was before the failure and will not be modding further.
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Old 10-10-2012, 09:20 PM   #82
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The timing chain failed. It needs new valves, cam, lifters, timing gear and chain, upper and lower gears, and oil pump.
Interesting....Never officially heard one way or the other, but sounds to me like these are "interference fit" engines....???....Sorry about the problems, but I think you might have to add pistons to the list of damages....
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Old 10-10-2012, 09:26 PM   #83
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It's not the cause. It's the situation that's scary...
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.....the engine just shut off. Almost like it would with the key.
So, let's say you're daughter is in the middle lane of a six lane, in town highway with a speed limit of 65 mph, and there's a lot of traffic. Ahead, is the crest of a hill she must go over (which she does) and then her car just shuts off "like it would with a key". And behind her coming over the crest of the hill is an 18 wheeler with a full load and not enough time to stop. So the result is.....unthinkable!

I say this, and I too find this "scary" because it happened to me once. But it wasn't my car that stalled rather the car in front of me. When I came over the crest of the hill and saw the stalled car, it scared the s _ _ t out of me. Luckily, and I don't know how i did it, I was able to maneuver out of the way in time too miss them. But it was darn close, and was the first time in my life that I could see the entire whites of someone's eyes. I imagined, by the look in their eyes, that they thought they were dead meat.

To this day, I drive (as much as possible) in the shoulder lane out of fear that my car too will suddenly stall. And when I have no choice but to drive on an interior lane, I try to keep my car in a position so if their is a problem, I can switch lanes quickly. I know I'm paranoid, but that event scared the hell out of me. You're very fortunate your problem didn't occur in similar circumstances.

So, I'm be very interested in knowing what happened to make your car to make stall........
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Old 10-10-2012, 10:52 PM   #84
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Interesting....Never officially heard one way or the other, but sounds to me like these are "interference fit" engines....???....Sorry about the problems, but I think you might have to add pistons to the list of damages....
I'm pretty sure (for what that's worth) that the V-8's are non-interference. That would account for the repair parts list being as such.

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Old 10-10-2012, 10:54 PM   #85
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So, I'm be very interested in knowing what happened to make your car to make stall........
The timing chain failed.

John B.
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Old 10-11-2012, 12:19 AM   #86
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The timing chain failed.

John B.
I missed OP's post on the timing chain, so thank you.
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Old 10-11-2012, 06:33 AM   #87
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I missed OP's post on the timing chain, so thank you.


Ya, I didn't specify the cause until last night. When the engine quit I still had plenty of inertia to roll probably a mile and make a few turns off the main road.


I think the pistons and push rods are fine.
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Old 10-11-2012, 07:23 AM   #88
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That sucks. Sounds like considerable damage.

Sorry to hear that Max. She'll be back better than ever though. Use this an an opportunity to upgrade something else
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Old 10-11-2012, 07:40 AM   #89
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Thanks Snizzle. I'm just putting her back to before. I really enjoyed the car the way it was. I only joyride around town with it rarely taking it on the hgihway so I have no need for more HP
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Old 10-11-2012, 08:06 AM   #90
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so I have no need for more HP
How many of us have said that before?
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Old 10-11-2012, 08:52 AM   #91
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How many of us have said that before?
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Old 10-11-2012, 09:46 AM   #92
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So out of curiosity, just what would cause this timing chain to fail under the subject conditions. Is it pulling harder turning the aftermarket cam and or springs ect??

Or, would it have failed as stock
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Old 10-11-2012, 10:20 AM   #93
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I'll echo what the others have said Max...and say that I'm sorry to hear that this happened. I had hoped that it would be an easy/simple fix. Unfortunately anyone that's been in the horsepower game for any length of time can tell these same types of stories over and over. Breakage and failure is generally considered 'the cost of doing business' for most of us. I broke a header bolt off in my 2000 SS with 1700 miles on it (had to pull head an have it tapped and heli-coiled), I stripped the HEAD-BOLT threads out out of the block with 7k miles on the car (doing my 3rd head swap on it), I've broken valve springs and bent valves, sheered off all 5 wheel studs, dropping me onto 3 wheels...I've I've grenaded driveshafts, rear ends...etc. You get picture. But those lessons haven't been for nothing. They taught me to work on my own cars and when given the opportunity, build it better/stronger than before.

Good luck with your repairs...don't let it get you down. A LOT OF US have been where you are. Just don't skimp on the rebuild...pay now or pay more later.
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Old 10-11-2012, 10:22 AM   #94
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I took it out today for a quick highway ride. When I got off the highway near my house and stopped at a light I noticed the engine was ticking when at idle and the exhaust sounded different. I proceeded home driving gentle when the engine shut itself down and would not start. Coasted to a parking lot and called AAA. Now she sits in my driveway.

I apologize for your frustrations! Have you had a chance to get a proper diagnosis at a dealership? Please let us know!

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Old 10-11-2012, 10:35 AM   #95
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Hi Brandon
No I haven't. I called Chevy CS yesterday case 71-1115680730 and was told that a rep would need to diagnose that the timing chain failed with out help from the mods before I would be covered. The codes indicated that it was a cam sensor so I flat bedded it a few hundred miles to the shop that did the mods where they informed me that the chain failed bending 9 valves, broke the timing gears, the oil pump was damaged, sheared the bolts of the upper tming gear allowing the cam to shift destroying the lifters. Not bad for a car with 4,200 miles on it mostly driven the speed limit up and down Main Steet. I did a lot of research after the fact and there have been issues with earlier model timing chains and the LS3 chain tensioner failing.
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Old 10-12-2012, 04:35 PM   #96
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Update Max? Got her back yet?
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Old 10-12-2012, 05:21 PM   #97
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She was tested today I will get it next week. Hopefully I will never be struck by lightning again!
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Old 10-12-2012, 06:21 PM   #98
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So your going back to stock bud?? or putting another cam in
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Old 10-13-2012, 07:50 AM   #99
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I cammed it again. I loved it! Hope I made the right decision. It will be hard to look at her with that same level of love and trust though. I will feel like I am looking at a pregnant bastard step daughter

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Old 10-13-2012, 07:53 AM   #100
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I did go back to the stock pulley in place of the SLP under pulley because harmonics plays a big role in breaking chains ( from another thread)
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