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Long idle times are difficult on the cam, but there has been plenty of failures that dont involve extended idle times

Nope, he is a moron, and if you believe this bulls$%t explanation, your either a idiot, or a moron also.

And @Krooser, you stated the LS oils the lifter roller, so how does that explain the LS cams fail also just like the hemi? I say its because its NOT a oiling issue, it's a poor casting issue. Same reason the SRTs dont have the failure rate of regular 5.7s. Its because the DO have a better cam...

I understand what your saying, but 5.7 cams are cast, they are not billet, and the material they are cast from is the issue. It has nothing to do with the lifter, the lifters fail after the metal crumbles or starts "delamination" for lack of a better term.

I forgot to mention earlier, I have been seeing it on the 5.3 chevy LS motors also, and they dont have the exact oiling design as the hemi. When I say "delamination" I'm referring to peices of metal separating off the cam lobes, sometimes in little chunks, pits, slivers, ect. And lobes that had...

Well now, a boatload, is still less than a thousand!

Didn't you allready see the picture of the cam lobe missing peices of metal with a perfectly intact roller allready posted in the thread? I have had a boatload of 5.7s in my shop for cam replacement, there is ALLWAYS bad lobes with a otherwise perfect roller still rolling on it. The lifters fail...

That 80 dollar summit cam was probably ground on a suitable core, not a potmetal mess from Chinese metal slush

You have a roller wheel, rolling along the lobe, the majority of the load is actually on the needle rollers in the lifter, all the wheel has to do is roll up and down the lobe. That is, until peices of that lobe, begin to flake off in chunks, as seen in the previous photo. No amount of oil on...

$80 right from the Chrysler parts dept

I didnt read any of the comments on the video, but evidently hes no expert on reassembling a budget 318 either. Just sayin.

A complete disaster. You just got to watch the video, it speaks for itself

No one is threatened by the "smoking man" with a channel, and no one is trying to bring him down a notch. That video above just gives some perspective into his skill level and mindset. Its HIS work, HIS words, and HIS results that speak for themselves. Hes probably a great guy, who helps...

I already said I wasn't going to talk about the cam issue anymore, but if any of you guys who worship Tony's skills want a nice overview of his talent, go check out his recent collaboration with Nick's garage on the budget 318 build. I will let the results speak for themselves. I'm so old, I...

Lol...actually, I'm not the least bit upset. I do have lots of experience, I have laid out why this happens, and why the youtube vid is incorrect. I just see no point to continue in this thread when nobody believes my input. Go back and read everything I have posted. But some guy with a internet...

The SRT engines dont have the issue because I believe it was pointed out they have a different camshaft. They still have the same oiling design, the same fifter bore angle ect. Do none of you guys find it odd that a brand new, obviously CNC machined camshaft is only $80 from Chrysler? I am going...

Ever seen a rod journal damaged from lack of oil? Hint....it doesn't delaminate...

Good points, but the fact that the same failure occurs in engines that do NOT have extended idling periods, would seem to indicate its NOT a low speed oil problem...

It's almost as if he was suggesting the oil is too slippery....I think his opinion is flawed also. But that's just my opinion who knows

Also surface hardness testing is almost meaningless in this situation, when peices come off in flakes, it doesn't matter what there surface hardness is.

Interesting that he claims that's its NOT a lubricating problem as far as volume, but a problem with the amount of "stiction" of the oil. Very interesting. Of all the 5.7s I have replaced in my shop, ALL of them had delamination, and zero appearance of a lack of oil.

That is correct. If it were some fatal "design flaw" places like comp cams wouldn't even sell you a cam, because it would be a warranty nightmare. Sorry, but Tony missed his diagnosis by a mile on this one.

Because they are made from a poor grade of metal, hence the failure. It wouldn't matter if you had all the oil in the world, the FACTORY cam will fail. Its NOT a oiling issue

He has some valid points, but he is incorrect about the cause of the cam failure. The cams fail because of a metallurgy problem, research camshaft "delamination"... The lifters fail AFTER the lobes start to flake. THATS the real answer. A brand new camshaft from CHRYSLER cost roughly 80.00 bucks...

Yeah, seen a handful just like that. It's the cam that fails, NOT the lifters

I did 2 of them back to back a year or so ago, and there was lobe deterioration on lifters that still rolled smooth, that's where I felt it was a soft lobe problem. I'm no scientist though, lol

In the ones I've torn down, it appears the cam lobe starts to fail BEFORE the lifter, you can see metal flecks coming off the lobes. I believe the camshaft material is to blame, (soft) a new camshaft from chrysler is like 85 dollars, what does that tell ya?

Which is a non issue. They SHOULD be replaced if your upgrading, but they run often to 300k miles without issue, even with cracked heads

There is a almost epidemic of 2011 and up 5.7s failing camshafts and lifters. Don't forget the timing chain tensioner failures either. The 5.7 hemi engines have a failure rate about 10x what the magnum series small blocks had.

This sir, is 100% bad *** hot rodding!! I admire your build skills!