Cam install created rattling/chattering

[MR.Sarge]

So I got a cam installed 2 weeks ago, BTR stage 3 cam, springs, lifters, C5R chain, Melling pump. And everything's been great up until the past 3-4 days where at idle at a stop, the car will create some rattle/chatter noise. unsure where or what it is from, goes away after you get moving and intermittently stops and doesn't come back. I cant for the life of me figure what it is that is rattling, header clamps (unsure if headers were removed when installing), heat shielding, etc. what could be the cause for the rattling?

It is getting SUPER annoying now, anyone have this issue? Or know what may be the cause?

[alaskacamaro]

Did you get an aftermarket clutch installed? They will sometimes rattle a little at idle. If not, take it back to your installer so they can hear it. Maybe cam vibration shook something loose.

[MR.Sarge]

No, it is the stock clutch so dont think its that at all. Even when I tried clutching in and putting it in gear and just holding it there it chatters/rattles the same. Dont get a change in the sound at all

[Gunmetal Speedster]

What does the rattle sound like? Had my transmission replaced two weeks ago and it came back with two types of unsettling noises. One was a metallic pinging noise and the other a deep grungey rattle. The metallic pinging was fixed by tightening the loose o2 sensors and the deep rattle was my exhaust hitting the tunnel brace. Removed the brace and all is good. Still debating whether or not I want to replace it with an aftermarket one that provides better support for 3in exhaust.

Probably just something that wasn't put back fully the way it's supposed to be or not tightened enough. Get her on stands or a lift and check it out!

[christianchevell]

read my post I just did at a the cam noise post and see if that applies... good luck

[MR.Sarge]

It is definitely a deep rattle. I went under the car to see what it could be and didn't see anything that stood out as loose or anything. I do think it maybe the tunnel brace with the shaking at idle how the exhaust is touching the brace I am assuming it is rattling hard and that's the reason why. Might have to see what I can do to pad the area in a way or create enough of a gap so it doesn't hit the brace and rattle.

Thanks for the help guys!

[Gunmetal Speedster]

Originally Posted by MR.Sarge

It is definitely a deep rattle. I went under the car to see what it could be and didn't see anything that stood out as loose or anything. I do think it maybe the tunnel brace with the shaking at idle how the exhaust is touching the brace I am assuming it is rattling hard and that's the reason why. Might have to see what I can do to pad the area in a way or create enough of a gap so it doesn't hit the brace and rattle.

Thanks for the help guys!

Consider adding several thick washer to either side, that's what I've read to do haha. Or before you try that, perhaps just remove it and make sure it's the cause of the issue first! Best of luck!

[christianchevell]

Yes; I have heard of the problem you describe before on here and the tunnel can also have loose heat shielding also and can benefit from a 60-100$ brace to help its rigidity...

[Superman09]

Originally Posted by MR.Sarge

It is definitely a deep rattle. I went under the car to see what it could be and didn't see anything that stood out as loose or anything. I do think it maybe the tunnel brace with the shaking at idle how the exhaust is touching the brace I am assuming it is rattling hard and that's the reason why. Might have to see what I can do to pad the area in a way or create enough of a gap so it doesn't hit the brace and rattle.

Thanks for the help guys!

My exhaust was rubbing on the my cross brace and made a terrible rattling sound. Push up on the exhaust at the brace and you will see a definite clean spot of it's rubbing.

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