Ok, ive got a 81 Chevy K10 with a SB350, last week i noticed after going offroading, there was a noise under the hood, ive narrowed it down to being in the front of the motor, at first i thought it was the alternator, kinda like a light metal to metal spinning, so i took off all the belts thinking it could be the power steering pully or something, and with no belts the, the motor still made the noise, but faintly, you had to really be looking for it to hear it, so i put all the belts back on, and same thing...
When i first start the truck in to cold, it seems to be louder, not real loud but enough to where you know something is up under the hood, while driving i dont hear it but i got a loud exhaust so, but it seems when the motor is all warmed up it goes away...
Any Thoughts? Ive worked with alot of cars and trucks and from my point of view its not a noise that seems like if u drive it you'll break something... Its like a light metal to metal spining noise or like a bad vacum leak,