Stock lifters the cam I have is made to work with stock lifters

 

I understand that, but I still think you need to double check.

Stuff gets machined wrong, parts gets put in wrong boxes, etc. Making a wrong assumption is sometimes a bad decision when it comes to these types of things, because in your mind, you've ruled out XYZ, but the issue lies there.

Remove the valve cover and see if there's a pushrod that has a lot of slack, which would indicate a lifter issue. And I'm not sure why some of them aren't getting lubrication, but that's a problem. See if there's a relationship between the loose rockers (if you have that) and pushrods w/o lubrication.

 

I wouldn’t be surprised that this is the problem.

 

well found out the cam shaft is chewed up put a camera there and it’s like if I was to grab a knife and scrap the sides of the lobs on the cam


my question is why did this happen

what causes the lifters to do this

cam defect? Off timing ?

truck had total 2-3 minutes of idle time

im guessing the chattering noise is the valves if its off timing

 

the lifters that is on the chewed up lob is sitting in the correct position from what I could tell

 

There is an oiling issue. Even if the cam was a tooth off it wouldn’t have caused this.

back to the cam retainer plate. That seal controls the oil to the lifters and needs the pressure to push oil through the pushrods. With no or low oil it will chew up lifters and a can quick.

 

Off chance that the camshaft was a bad unit out of the box with poor metal quality.

But usually it's a oiling problem or the lifter failures and wipes the cam lobe.

 

Did you find the issue yet?

 

yes timing was off badly when i reinstalled it

now im having a issue with push rod the exhaust side push rod is sticking out pass the heads not sure if this is normal or not all the others are same height