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Flat cam??

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Old Dec 13, 2007 | 09:42 PM
  #1  
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bluovalguy
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Default Flat cam??

Anyone ever hear of a cam going flat? I was told this could be one of my problems, but I have never heard of it. I am assuming it means one of the lobes is bad.
Old Dec 13, 2007 | 09:45 PM
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Default RE: Flat cam??

also known as wipeing the cam one or more lobes very worn or broken.
Old Dec 13, 2007 | 09:47 PM
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Default RE: Flat cam??

Anyway to check for this other than tearing it out?
Old Dec 13, 2007 | 09:51 PM
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.....

Last edited by Scott H.; Jan 14, 2010 at 11:15 PM.
Old Dec 13, 2007 | 09:56 PM
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Default RE: Flat cam??

So, if it is flat, then when I turn the engine over (by hand, right?) the valves over that lobe will not move. Makes sense. Guess that is what I will be doing this weekend.

What would be some symptoms of this?
Old Dec 13, 2007 | 10:19 PM
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.....

Last edited by Scott H.; Jan 14, 2010 at 11:16 PM.
Old Dec 13, 2007 | 10:37 PM
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Default RE: Flat cam??

i wiped a lobe on that summit cam i had in my old 302, it was running rough but would STILL destroy the tires with 7 cylinders firing.


awsome
Old Dec 14, 2007 | 07:22 AM
  #8  
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Default RE: Flat cam??

ORIGINAL: Scott H.

rough idle, lack of power, eventually screetching noises as the metal particulate (swarf) embeds into the bearings and slowly grinds away the crank journals.
Vacuum needle will be low pulse rythmically with the rpm.
So what makes you think you have a flat cam?
I had a buddy look at it cuz it runs kinda rough, has a misfire on the right side, and backfires. He is pretty knowledgeable, and he talked to some of his friends, and they said that is what they think it is. He is not charging or doing any of the work, so I know he aint just making stuf up to ring up a bill. I dont know if I am convinced this is what happened, but I am gonna check it this weekend.
Old Dec 14, 2007 | 08:35 AM
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Default RE: Flat cam??

I had a cam go flat in my 408 a few bout two weeks after I installed it.... I had to replace the cam and lifters, but I went with a significantly more agressive setup.
Old Dec 14, 2007 | 11:23 AM
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Default RE: Flat cam??

I sort of wish that I would wipe a lobe.. I just rebuilt mine with the edlebrock performer plus, and as a few people were telling me,, i am wanting more power already.. If I wiped a lobe, I would have to replace it and therefore be able to go bigger!! Just like superdavid! Dont get me wrong,, it goes good.. I think Im just ansy for the 500 mile mark where I can open her up..



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