Hey I just started driving my firebird and I notice this clicking chattering type noise but i can't tell if it is an exhaust leak detonation a valve or a loose rocker. it makes the noise under load certainly can't hear it under the hood. I hear it the loudest in 5th gear because the rpm is the lowest and i have a mechanical fan but it almost sounds the same in a lower gear just harder to hear. this noise is rhythmic meaning it is predictable and not random.
my worst fear is rod knock but i cant hear it at idol so I'm not too worried about that

what do you guys think? any input is appreciated

 

Do you have headers?

 

stock cast manifolds

 

please.

 

your description could be anything. Its impossible to say, its this, or it isnt that Post a sound clip of the car running with the noise. Is the knock present in all gears? Only under load? While accelerating? Below a certain RPM? A whole lotta more info is needed, and even then it could be anything.

 

Like i said it is there all the time, in all gears it is most apparent in 4 and 5 because i can hear over my mechanical fan. I'm gonna go look for carbon around the manifolds. it is hard to get a sound clop when I only hear it while driving it is not very loud but I can try.

 

Loose flywheel bolts will make a weird sound.

Any problems with oil pressure?

 

I will have to go hook up the oil pressure gauge to inform you of that. I guess I'll go do that. It is mechanical and I just don't like the idea of 60psi of hot oil shooting out at me.