What purpose does the bolded part in red serve you? Just curious what the end goal here is since you stated you haven't contacted Cam Motion and don't want anything from them not even 4 new cams. You haven't contacted them and want nothing from them, but you make multiple posts on this forum alone about the issue. There is some end goal you are working towards or trying to create negative publicity for them.

 

Grinder is looking for information like we used to do back in the early days of LS1Tech from how his question read. His question doesn't read like an attack or shade so I'll give Grinder the benefit of the doubt instead of attack him for asking the question.

I recall seeing similar types of questions about dry sleeved LS1 blocks etc back in the early days.

 

I didn't post anything in red.....

 

Sounds like some guys must work for CM!!! I AM NOT ATTACKING ANYONE. 3rd grade level comprehension. I am looking FOR PEOPLE WHO have had lobe failures with CM cams. Maybe they found out what actually happened. Then to be clear, I could use their solutions in my bext build. And no, 6 cams won't compensate me for my time, effort, or the near $6,000 this has caused, and cost, me. Just want to prevent a repeat. I wonder how many guys here have ever gotten free replacement $400+ cams? Many butt hurts here. How many guys posting here actually have run CM cams in their LS V8s???? Is my question really that hard to read and comprehend? Thank you, Blackbird 99......

 

Heads being set up for XXX and you install on XYZ has nothing to do with WHO set them up but end user choices.
I'm not a Mamo fan.
Now for the "complete" built motor, I have to go back to user error.
Low oil + high RPM ?
Walmart (or anther store) brand oil
Wrong oil for application
Crappy oil filter choice (Fram/some store brand)
And the list goes on.
How are the lifters ?
Brand ?
Come with cam ?
Used/new ?


Not defending CM, but hard to believe you got 2 cams from same supplier at 2 different times, years apart, and both were bad is all.

Trying to find the common denominator and prevent future issues.

 

Not really. GM sold a lot of **** LS7 heads for over 10 years, and many, many owners got the shaft, and it wasnt a cam!!!

 

I put it in red to show what statement you made that I was referencing with my question.

 

...and now you are insulting anyone that questions you or offers up any other possibilities. So far no one from Cam Motion has posted and no one else here has posted about having the problems you have experienced either. Maybe these problems you speak of aren't very common and something else may have been going on. It's an honest discussion, but you clearly get offended and try to shut anyone else down who may question you. There are a lot of members here and the internet is an amazing place...if a problem is common with a manufacturer everyone would know.

I have one of their cams. I shift at 7200 rpm with .621 lift and drag race the car. I pulled the motor and went through it last winter. I didn't change any parts because nothing showed any signs of issues. Motor is about 5 years old now. Combination is around 1000 rwhp with an f1a-94 procharger on ethanol and meth injection at 10.6 to 1 compression. No butt hurt over here.

 

I think the problem is some boredom combined with passing the blame instead of actually investigating the issue. I mentioned I've had issues with several Cams over the years from different people but clearly that doesn't apply here.

You made some solid points in two posts that were completely side stepped. That says enough. Common denominator is the person making the first post.

 

This is the first I've heard of a Cam Motion issue. There have been tons of Comp Cams issues with cams and springs over the years. I have a Comp Cam and it's been fine. I suspect something other than the cam is the issue. Could it be an oiling issue? Odd for sure.

I had a set of Hooker headers that leaked at the head. $550 flushed down the drain.

 

I'm leaning towards the Valve Springs..

 

Yes....and after reading Tony's post I think it pretty much says it all.

Regardless of what company you choose you should go to the 8620 core when going back together.

 

Don't know what more I can do to try and get some actual FACTS than sending Tony the springs (at MY expense) to test. I'm all about facts, not opinions. Opinions are one reason some forums are dying because not enough facts are presented. How many here have hardness tested your own lobes? I'm doing just that Thursday or Friday. However, it is possible the lobes have work hardened to a degree. To what degree, nobody will know. But again, I'm trying to present facts. I had a quality spring tester for many years. When we moved about 10 years ago, it was somehow lost. Having Tony check the springs will result in facts, not opinions. I originally asked for anyone who had trouble with CM cam lobes to please post. I ended up needing a lawyer!!!! Since many here think 70 year old guys drive the snot out of their cars, don't change their oil, run junk oil, etc, here's a few FACTS:
I always run Mobil 1 0w40 (start the arrows).
I change the oil every 3,500 miles.
I run a Wix filter.
Heads were "fixed" by AHP
Engine saw redline for maybe 10 seconds twice/month, most times once/month-Maybe.
Rest of the time was between 2,000-2,500rpm.
14 of the LS7 lifters look fine. Only the wheels that were on the 2 worst lobes were looking a bit rough. I was going to buy 2 new LS7 lifters, and run the 14 good ones again, trying to reduce chances of getting a bad lifter. But Tony's new cam was more aggressive than my old one was, and he recommended Johnson 2110Rs. So I went with those. Ill post the results, if it matters......

 

I don't care if it is two years apart or twenty if I'm pulling two cams out that have chunks missing I'm not going to be thrilled

 

Some of us have had several metallurgy classes and work doing that kind of stuff..

 

I've also had them. That and 4 years worth of other classes and over 40 years hands on. You don't become a qualified journeyman Tool and Diemaker without the schooling AND experience BOTH....

 

I’ve only been with my employer for 26 years. I was a quality technician then a gauge technician. My job as a gauge technician was to read prints, design gauges, qualify and calibrate gauges including everything from micrometers to surfaces etc. I’m currently an engineer without a degree through on the job training.

I’m the guy that designs and calibrated precision measuring equipment lol. Odd that credentials are being questioned when it’s possible the incorrect preload specs were used for the lifters. We don’t need credentials to measure lifter preload lol.

 

Just need the right tool and basic math skills, oh and what the required spec is. That's a very important number.

Then it's a matter of doing the procedure correctly.

Some people like to go above and beyond tho..