...and the 408 is dead...
12-23-2012, 08:13 PM
#21
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Supposedly there are a few cases of the dampener causing issues with chains as well don't recall the brand people had issues with but they experienced broken chains as well.
12-23-2012, 08:24 PM
#22
I agree with that on a theoretical basis. An undersized (or stock) damper combined with a lightweight flywheel and a tuned-up motor will allow very large transients on the chain as each cylinder fires. If true, this breakage is kind of like the case of the paper clip bent and unbent one too many times--eventually, all of those minor deformations add up and the tensile strength of the steel erodes away to nothing.
12-23-2012, 09:50 PM
#25
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That is weird since even the stock chains look beefier than the old SBC and BBC chains. Those chains ran a fuel pump, distributor, and oil pump and I haven't heard many if any cases of them breaking. of course we are talking LS engines.
12-24-2012, 07:32 AM
#26
Radeon - How much noise was it making when it was cranking? I would have to imagine that a chain flopping around the oil pump would be making quite a racket. If you wiped out a cam lobe, the lifter would be tapping like crazy and most likely not be completely gone all at once and there would have been some warming signs/noises. Take the valve covers off and take a look around, then pull the accessories and front cover.
Last edited by 07CTS-V; 12-24-2012 at 07:38 AM.
12-24-2012, 09:36 PM
#29
That's weird because there is only one spot on the cover that needs ground down (the boss on the back side of the sensor bolt) and it only took me 10 minutes. Maybe there is more on an LS6 cover, but it's still not really that scary. The modifications to the windage tray are way scarier. Lol
12-29-2012, 08:59 PM
#33
i went out to take the valve covers off, and saw some compressed springs, so i decided to just do a little more. 8 hours later, the radiator, water pump, intake, heads, etc, were all off, and sure enough, bent *** valves, and thank the sweet lord: the pistons are fine. looking to see what the next step with the heads are.
12-29-2012, 09:18 PM
#34
i went out to take the valve covers off, and saw some compressed springs, so i decided to just do a little more. 8 hours later, the radiator, water pump, intake, heads, etc, were all off, and sure enough, bent *** valves, and thank the sweet lord: the pistons are fine. looking to see what the next step with the heads are.
https://ls1tech.com/forums/parts-cla...zl1-cts-v.html
12-30-2012, 12:58 AM
#36
