DuvalMustangSS Posted March 26, 2016 Report Share Posted March 26, 2016 So, I have a 2004 SS 140k. Always had a little bit of noise on the passe ger side, bit nothing too bad. Last week, CEL started blinking, car started making a noisey rapping noise, and finally shut off as I came off the highway. I suspected it was a stuck lifter that kept the valve open and was flooding the engine ( I also smelled gas in the exhaust btw). It also never gave a code on my code reader, which was weird.I got it home and started to disassemble foen to the lifter. Found one worn lifter on the pass side, but nothing huge. Then looked down the hole at the cam and saw that one of the lobes saw half way broken off. FML... I started to take off the front and pulled the cam out and it was shot. I also noticed my timing chain was very loose, but the teeth on the gears weren't too bad. Here is where I need help: 1) I am the second owner of the truck and the milage is pretty low all things considered. Is it worth trying to contact Chevy and make a stink about it. My guess is that the Cam was defected when the truck rolled off the line. If it was just some scraping or a chuck out of it, then I wouldn't think about it. The fact os that half the lobe broke off and I fished it out the oil pan. That is hardened steel and how the hell it broke like that has yo be a defect in the part or the steel. Your thoughts? 2) Any tips on installing the new Cam. I have never done one before and don't want to mess it up. Also, once I get the Cam in what about putting on the new timming chain and gears. I HAVE NOT TOUCHED OR MOVED THE CRANK SHAFT! But am worried about installing the gears and chains perfectly so I don't mess up the timing on the truck and the crank. Any tips on how to install the chain and gears and make sure they line up with the crank shaft gear so I don't make things worse once I reassemble and start using the truck again? Thanks for everyones help! Quote Link to comment Share on other sites More sharing options...
DuvalMustangSS Posted March 26, 2016 Author Report Share Posted March 26, 2016 Pic of Cam Pic Quote Link to comment Share on other sites More sharing options...
canadianVRss Posted March 26, 2016 Report Share Posted March 26, 2016 Damn. That is destroyed! I recently did a cam swap and found the stock cam chipped, but nowhere near that level of nastiness. Don't worry about the timing. You can spin that biotch all day, dot to dot and it'll be fine. Cam 6 o'clock, crank 12 o'clock. Quote Link to comment Share on other sites More sharing options...
DuvalMustangSS Posted March 26, 2016 Author Report Share Posted March 26, 2016 Thanks VRss. So just to make sure, you are saying to just line up the marks/notches on the two gears and don't worry about trying to put them in the exact same spot as the originals? Quote Link to comment Share on other sites More sharing options...
canadianVRss Posted March 26, 2016 Report Share Posted March 26, 2016 Correct. Dot to dot. Don't worry about where it was originally. I hope you spun the cam to make sure the lifters on the other bank are up into their lifter trays as well. Would suck to drop a lifter. Quote Link to comment Share on other sites More sharing options...
1BAD2K Posted March 27, 2016 Report Share Posted March 27, 2016 That sucks, but at 12 years old and 140K, I think you'd have a tough case. Would be a nice time to upgrade the cam though lol. Quote Link to comment Share on other sites More sharing options...
Downeast Johnny Posted March 27, 2016 Report Share Posted March 27, 2016 You could give GM a call. Probably start someone there's day off with a good laugh. That is a pretty dramatic failure. It might actually be a good idea to call GM and ask if they've ever seen this type of failure before. Quote Link to comment Share on other sites More sharing options...
evandostert Posted March 28, 2016 Report Share Posted March 28, 2016 I would start cam, lifters, trays, pushrods new timing set and hope it lasts. How do the cam bearings look??? Quote Link to comment Share on other sites More sharing options...
DuvalMustangSS Posted March 28, 2016 Author Report Share Posted March 28, 2016 Johnny I will try to call GM today and see if they have any record of this happeneing to other people. Maybe there was a recall or a defective part reported in some of the trucks. Evand, I replaced the cam, the timing set and lifters. I cleaned the push rods and all the other moving parts. All the bearings seemed good in the cam. I also am going to do a valve job and put new gaskets everywhere. I also am going to clean the hell out of every piece I can reach. Fingers crossed that it all goes back correctly and purrs like a kitten. Quote Link to comment Share on other sites More sharing options...
Thickcajun Posted March 28, 2016 Report Share Posted March 28, 2016 With the cost of new push rods ans springs under the 250 mark i would replace them as well...Cheap insurance and good luck with the install... Quote Link to comment Share on other sites More sharing options...
Downeast Johnny Posted March 29, 2016 Report Share Posted March 29, 2016 Johnny I will try to call GM today and see if they have any record of this happeneing to other people. Maybe there was a recall or a defective part reported in some of the trucks. Curious to hear what they have to say. Quote Link to comment Share on other sites More sharing options...
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