Generation III Internal Engine 1997-2006 LS1 | LS6
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Old 03-23-2007, 08:37 PM
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so when we were installing the cam ... the guy who was installing the rockers back on stripped a bolt on ... i forgot about this .... so they took a bigger bolt and made it work on it .... i am wondering if this was making the clicking noise ... maybe when the lifter is trying to go down it is clicking cuz that bolt is too big and not letting the rocker function correctly ... here is pictures of the bolt that was put in there ... they are all tightened to 22 ft pounds i just checked



Old 03-23-2007, 08:41 PM
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^^^ I know I didnt just see a Home Depot/Autozone bolt being used as a rocker bolt.


What is it that allows people to do all this work and then not wait a day or 2 to get the right bolt from the dealer and instead they start using **** from home depot on the internal moving parts of their engines?

Also why are you running a 7.4 pushrod when you need longer pushrods?

Last edited by brad8266; 03-23-2007 at 08:53 PM.
Old 03-23-2007, 08:51 PM
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Originally Posted by LS1TA385
I am not sure what cams TR uses but I think it is Comp, if so it is probobly an XER cam with "agressive ramp rates" and if so it will cause quite a bit of valvetrain noise. I would check the torque on the rockers or for a broken spring and if everything is good then it may just be the cam. It is just hard to hear how serious the sound is over the internet though.
Its an XE lobed cam
Old 03-23-2007, 08:53 PM
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i dont think the "aftermarket" bolt you are using is such a good idea. why didnt/dont you just get a checker and measure for correct pr length?
Old 03-23-2007, 08:54 PM
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I think you need the longer 7.425 pushrods and definitely wait and order the correct bolt from the dealer.
Old 03-23-2007, 08:54 PM
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You need to get the right rocker bolt and you also need longer pushrods. 7.4 is way too short. Some 7.45's may be in order, but at least 7.425's.

the base circle of an XE cam is 1.450.
Old 03-23-2007, 09:04 PM
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dvandentop is a member here i think

he said it would work perfectly .... he has done many cam installs and lots of work on lsx engines so i trusted his input
Old 03-23-2007, 09:05 PM
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dvandentop is the one who helped me ... thats why he was giving this input ... this was the first major work i've done on my car (next to headers) and i just trusted him .... pry wasn't a good idea tho ... i'll order a bolt from a chevy dealership tomorrow ... :rant:
Old 03-23-2007, 09:07 PM
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Originally Posted by brad8266
You need to get the right rocker bolt and you also need longer pushrods. 7.4 is way too short. Some 7.45's may be in order, but at least 7.425's.

the base circle of an XE cam is 1.450.

so what your saying is i really need to get what size pushrods? i have aftermarket stock length ones now ... 7.4
Old 03-23-2007, 09:27 PM
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Originally Posted by wssexorz
so what your saying is i really need to get what size pushrods? i have aftermarket stock length ones now ... 7.4
The 7.4's are just a tad longer than stock, but are still way short. I calculate you to need around a 7.441 pushrod which falls in between 7.425 and 7.450. Since that number is very close to 7.45 that would probably be you best bet even though it will preload your lifters an additional .009.
Old 03-24-2007, 01:29 AM
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wish i woulda known this when i bought my pushrods ...
Old 03-24-2007, 01:38 AM
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thats not an ls6 intake.. and i think its an exhaust leak.. also more valvetrain noise is normal.. did u get it tuned yet?
Old 03-24-2007, 01:49 AM
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its not an ls6 intake? just ls1? how can you tell? i bought it from my roomate and it was on his car ... he bought his car off ls1tech and papers say its ls6 ... wtf


it has not been tuned ... i have put like 40 miles on it since cam install ... had no exhaust leak before this and i didn't touch the exhaust
Old 03-24-2007, 02:13 AM
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unless sombody tried putting EGR on the intake its not an ls6 intake.. it has a plug from wat i can see on the vid... u see that lil space at the very front top of the intake, rite in back of the TB? look at it from the top and u see that lil bolt? thats a plug. there should be nothing in there lil space.. but like i said somebody could have tried to put egr on an ls6 intake.. ive seen it done before...
Old 03-24-2007, 02:16 AM
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o and i have stock length rods with the ms3 no problems. .witch is bigger than ur cam..so i think u should be fine with those PR but id defenalty change that bolt out on the rocker i just noticed that! couldnt cost u more then 2 bucks for that bolt from the dealer.. i dunno how they stripped it.. hopefully they didnt strip the thread on the block, and crossthreaded with a bigger bolt... and hopefully its no corse (sp?) thread.. this is why i like to either be there wen there working on it.. or do it myself.
Old 03-24-2007, 02:25 AM
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i am really afraid it did get crossthreaded .... then i am fucked ... literally .... idk what to do then ... i plan on going to dealership tomorrow morning to pick up new bolt and see if it threads
Old 03-24-2007, 03:52 AM
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I believe that is an EGR equipped LS6 intake.

I honeslty cant believe that bolt you used tho. Lets just say hypothetically that it works perfectly fine and will never cause any problems...Uh yeah, dude look at it. Im boggled/
Old 03-24-2007, 10:06 AM
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Originally Posted by wssexorz
i am really afraid it did get crossthreaded .... then i am fucked ... literally .... idk what to do then ... i plan on going to dealership tomorrow morning to pick up new bolt and see if it threads
In that case you would need to buy some 8MM X 1.25 Helicoil and re-thread the hole to what it should be.
Old 03-24-2007, 10:43 AM
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did u pay somebody to do this? id defenatly go back, MAKE them fix it, than kick there *** for the trouble they have caused me! i would have defenatly not paid them for there stupidity of using that bolt for the rocker...the stock ones are shaped that way for a reason.. and that size for a reason aswell. good luck!
Old 03-24-2007, 11:02 AM
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he asked for 175 dollars for the work .... i have not payed him a cent yet because all of the trouble he has caused me

there is 2 other things that got fucked up that i had to go back and fix too ... oil pump and pcv piping



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