Cam Motion cams......
I agree. Tony Mamo set up the first set of AFR heads. End of that story. Second set of heads, OEM LS7, were set up by Thomson Automotive (now LPE), a well respected engine builder, who also built the entire engine. Third set of same OEM LS7 heads set up by AHP. IDK where I coulda gone to get better labor. However, I haven't really gotten a response from anyone to answer my original question. I'm gonna post pics of cam later today, but testing for hardness might take a week or so. I'm NOT attacking CM. I AM looking for other members who've had issues with CM, that's all....
I recall seeing similar types of questions about dry sleeved LS1 blocks etc back in the early days.
Last edited by 99 Black Bird T/A; Aug 9, 2024 at 08:19 PM.
Thread Starter
Joined: Sep 2004
Posts: 3,212
Likes: 1,612
From: Michigan & Florida
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.
Thread Starter
Joined: Sep 2004
Posts: 3,212
Likes: 1,612
From: Michigan & Florida
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......
10 Second Club
Joined: Aug 2010
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From: Harford Co. Maryland
I agree. Tony Mamo set up the first set of AFR heads. End of that story. Second set of heads, OEM LS7, were set up by Thomson Automotive (now LPE), a well respected engine builder, who also built the entire engine. Third set of same OEM LS7 heads set up by AHP. IDK where I coulda gone to get better labor. However, I haven't really gotten a response from anyone to answer my original question. I'm gonna post pics of cam later today, but testing for hardness might take a week or so. I'm NOT attacking CM. I AM looking for other members who've had issues with CM, that's all....
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.
Thread Starter
Joined: Sep 2004
Posts: 3,212
Likes: 1,612
From: Michigan & Florida
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.
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.
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......
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.
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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.
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.
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.
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 had a set of Hooker headers that leaked at the head. $550 flushed down the drain.
Last edited by wannafbody; Aug 10, 2024 at 03:43 PM.
Thread Starter
Joined: Sep 2004
Posts: 3,212
Likes: 1,612
From: Michigan & Florida
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......
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......
Thread Starter
Joined: Sep 2004
Posts: 3,212
Likes: 1,612
From: Michigan & Florida
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..
Then it's a matter of doing the procedure correctly.
Some people like to go above and beyond tho..