Odd noise under hard driving

[rainier446]

So I went to the Tail of the Dragon this past weekend, and it was fantastic. I got to drive all the roads around there as well as the actual Tail about 6 times.

Me and my friends actually drive VERY hard, the only people going faster than us were the regulars and the Killboy folks. I noticed however that after a few minutes of driving HARD, tearing through 2nd and 3rd gear that my car was making an odd noise.

The car started making a howling/metallic noise after a hard run about halfway through the road. Now mind you I was HARD on it in 2nd and 3rd gear, twisty as all hell roads requiring every ounce of stability to keep the car planted. The noise sounded most similarly to the noise old brakes make, but the pitch would get higher the more I romped on it. I verified it wasn't a brake thing, I had zero issues with the PP brakes even after all those runs. I'm thinking either diff or carrier bearing because it was load relative as well as heat relative. It only did it when I was going hard and it only made the noise under load. I'm quite perplexed actually and I don't think I can reproduce those conditions anywhere near me.

It would take a while to start making this odd noise when the car was cold but if I had just done a run, and went back 15min later then it would start again almost immediately.

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[Stang-15]

I don't know if you have LT headers or not, but I had similar sounds from my car (when driving hard) after the headers were installed. My car only made weird sounds when turning right into a curve. Problem ended up being the steering shaft was hitting the header due to the car flexing. If you don't have headers, that probably isn't your problem.