Check out these pics. It is a G5X2. It has about 10k miles on it.

Would this cam be reusable?

 

No

 

Looks like some pitting on the lobes, did it come out that way? and no, I wouldn't use it. Did this come out of your car? if it did you may want to look at your lifter wheels to see if the are pitted too.

 

DEFINITELY not.....

 

The cam did not come out of my car. I was just posting for another member. Is this a common problem with aftermarket cams? What would cause something like this to happen. Stock cams will last for 100k miles and this one has 1/10th of those miles.

 

Looks like too much lifter pre-load to me. Someone didn't adjust the rocker arms correctly. No it's not a common problem with aftermarket cams but it may be symptomatic of cams that have a high lift; they require strong springs which stress everything else. Thats why comp 921 and 918 springs are supposed be changed around 10-12K miles with anything at .600 or greater lift, the high seat pressures wear them out.

 

Looks like too much lifter pre-load to me. Someone didn't adjust the rocker arms correctly. No it's not a common problem with aftermarket cams but it may be symptomatic of cams that have a high lift; they require strong springs which stress everything else. Thats why comp 921 and 918 springs are supposed be changed around 10-12K miles with anything at .600 or greater lift, the high seat pressures wear them out.

 

Looks to me like an incorrectly hardened cam. Several vendors have had issues with this, Cam Motion comes to mind quickly. Futral suffered from this (they use Cam Motion) a couple of years ago. Comp had a few issues as well. If you bought it used, try and get your money back.

It makes a pretty paper weight though

 

Exactly what vettenuts said. I bought a used cam like this, an X3, had the same issues. I returned it back to the seller and he thankfully refunded me.
But I would NOT install that. Unless you want to ruin lifters and have to the pull heads.

 

As everyone else said, no way I'd use it.

 

I didn't want to say anything but those are where I have seen alot of this on. Every time I see on in the for sale section it looks like that and those are made by Comp.

 

looks like 50k miles

 

Help me learn a little here. I thought that the rockers on LS motors were non adjustable. What is the correct way to adjust rockers to avoid this problem?

 

They are not adjustable other than shimming. Shimming will change wipe only, pushrod will change preload. Fully adjustable, pushrod does both.

 

Just had to replace cam/lifters due to them beginning to pit eachother. Luckily I got it before any issues arose. The cam that came out was a comp cam and looked like the one pictured. The lifter rollers were trashed. I had quite a few miles on the setup though so I couldn't be that suprised that it did it with such a high lift cam.

 

That was my G5X2 cam with less than 10K miles and never seen 4000 RPM's ... I told Eddie that it is not usable but he wanted to post up to see what the cause.
I really don't wanna post this because it may stir up with Lou at LG.
I was one of the very first person to get on the first batch of G5X-2 cam. I got the cam installed at GM dealer during they did the re-rings.
Everything was stock except springs and push rods those came with the G5X-2 pkg.
The valve train noise level just keep getting louder and louder but I thought it is just because of the cam and springs.
To a point, I started investing to after market rockers since people said those would quiet down the noise. I got the Crank rockers on for a month and still got the same noise and started hearing those Crank rockers may fail so I took them off the put the stock lifters back on.
About 2 yearrs ago, I upgraded stock heads to 5.3 stage 2 with Patriot gold springs. When removing the stock heads, I found 3 or 4 stock lifters got eaten up. I then replaced those with new good ones but did not know the cam actually eaten up the lifters or vice versa ...
After I put in the new lifters, the valve train even more noisy than it was before. I thought because of the new valve springs which rated to 6.5 lift.
Recently, I added supercharger and swapped out the cam to notice those damages ...
So for those with big cam and noisy valve train, watch out


-Mike

 

They are not adjustable. However, when you add a high lift cam and don't change the push rods or get adjustable rocker arms you can put too much preload on the lifter by trying to have the rockers go back to the stock locations on the studs. IE too far down the stud. That will add preload.