03sierraslt

iTrader: (22)

That crossed my mind as well. I just hated to jump to that since I couldn't tell much from the noise.

smokeshow

iTrader: (16)

I believe the pilot still engages the crank somewhat when bottomed out in the trans, so that may not be a safe idea. But the noise sounds no bueno, man

It could be that procharger...those things always sound like they are on the verge of exploding anyway

Gadgetized

iTrader: (9)

If it engages, I wouldn't risk it then.

All I can hear is procharger.

Try a compression check if it is a piston. Usually they break where the rings butt, and could lower the reading.

phasemaster1

iTrader: (11)

**** I hope its something real stupid, my next venture compression test.

1FastBrick

iTrader: (17)

My thought was that maybe something inside is diverting the air in away that could cause the air to have a "whistle" like effect esspecialy since you mentioned water or condensation in there.

phasemaster1

iTrader: (11)

when I thought it might have been a exhaust manifold gasket and changed them I also changed the plugs and they didnt look fouled or coated with oil. Porcelain was also white I was looking for any abnormalities.

AKlowriderZ71

iTrader: (22)

Yeah, I heard the noise right away. Piston speed, and sounds exactly like 2 others that I had in my shop, with broken pistons.

phasemaster1

iTrader: (11)

Finally pull the heads pistons look good. Will take a better look tomorrow and clean the carbon crap so I can rotate engine and check cylinder walls for damage.

gmtech77

Check/Clean your throttle body. Carbon build-up can make them whistle.

1969x11

iTrader: (38)

Sounds like you ate a lifter.I hope not