Sounds like a bent pushrod, collapsed lifter or just hasn't been run long enough to get good oiling to the valve train. Takes about 2-3 minutes on a pre-04 LS1 during first start-up. Never heard a squeal though. To check push rods, pull rockers & roll push rods on a glass table. Any wobble is bent. To check for collapsed lifter have to run w/ valve covers off (warning: this will cause a vacuum leak on your car, 'cuz the intake is hooked up to the valve covers. So, plug the PCV lines running to the intake after removing from the valve covers, in order to eliminate the vacuum leak). Watch the rockers while car is running. Collapsed lifter will be the rocker that is not moving up & down as much as the others. Also, will not be pumping as much oil or may not be pumping any oil through the pushrod. Some oil will spill out of the heads into the engine bay &/or on to the headers. So, be ready for it.



Nasty, 12.67 is pretty bad-ass, IMO; especially, if you're running on street tires.

I think ur over thinking it. If your getting a squeal. It somewhere on your accesories. Ive seen alternators do this dozens of times.

take the belt off the car, then start it. tht will tell u what it is

hey kevin i went 11s on streets lol, and i plan to go 10 on street tires. how good am i doin? haha

wtf???

click it!!!

and chris, tell me u didnt get beat by him.

Thanks LS1, I think you have hit the nail on the head with one of those two things. It has brand new heads on it, but after listening to it a lot today, I've decided it's coming from the driver side head near the back of the motor. Is there a way to tell what heads are on it? And yes I ran the car without the belt, one of the first things I did, still makes the noise. I swear it was a squeal from inside the motor.

Brand new heads doesn't mean brand new pushrods & lifters. The heads are not the problem.

Bob, you suck! That's how good you are; LOL. Spray & forced induction don't count as BAD-ASS when running under 12's. It's gotta be NA. If she's NA, then we'll see how good you are...

i went 11s on street tires n/a. full interior, a/c. no weight reduction. w a cooler in the back!

rear drivers side............. auto or 6 spd?

Any one want a 8.8 built? mini ladder bar, or torque arm. ive been wanting to fab one.

suck on it joe, he got me by like 4 from a 50 roll.... i wanted to do a 60 but we ran out of highway jason was nice enough to take this one for me, the dig run was useless, left t/c on which killed me http://www.youtube.com/watch?v=Bx2RzaVFqa4