Im looking for a few sound clips of an lt1 engine with long tube headers but not open. I want to hear how loud the motor is what noises it makes with the headers on. Ever since I put mine on it seems to be maken more noise and I can hear the valves more.

 

Sorta normal. My car does. When I put the headers on, you could kinda hear the valves. When I switched to 1.6's it may have gotten a little higher?

It seems to be pretty common with Pacesetters. I think its because they use a thinner gauge metal for the primary tubings. So you can almost hear a "tick" of the valves closing. I can hear it slighty from in the car. If im parked next to something idling, you can hear it kinda echo off of it. And the noise is the most noticable if you put your ear up against the inner fender, like by the tire.

 

I've got Kooks and I don't hear any tics

 

There were a few other people with Pacesetters, a while back, that could hear their valves closing through the headers ???

 

I hear that I keep thinking that there not stealed up.