blackz93

iTrader: (2)

engine sound

i took the valve covers off and everything was tight and seemed to be ok so i guess its not in the top end

after i drive it for a little bit it goes away though, i dont understand that.

blackz93

iTrader: (2)

at fisrt start up it kinda sounds like an exhaust leak. but when you get under the hood you can tell it isnt...

DaleMX

iTrader: (4)

What's your oil pressure like? If you spin a bearing I think your pressure will decrease. Also change the oil and inspect the filter. With a sound like that I would not run it for anything but testing.

wrencher

iTrader: (2)

If your feelin' brave , you can pull plug wires one at a time & see if it changes the noise.
Even on LS1's you can disable injectors one at a time, it will have them same effect.
For the wire test ;
I usually take a pair of bent needle nose pliers, & hook a jumper wire to them & ground.
With gloves on pull one at a time while idling, see if noise changes.
Then you'll know for sure it's bottom end.

blackz93

iTrader: (2)

oil pressure is good and it only does it when i rev the engine.

blackz93

iTrader: (2)

there is no metal in my oil either, not on the dipstick anyway.

will there always be metal in the oil with a bearing problem?

wrencher

iTrader: (2)

With a bearing problem the oil will take a "metallic" look to it.
In other words looking closely at the oil & depending upon the severity of the problem the oil will have small metal particles in it.