98 camaro whisles?

[boosted 98]

my ls1 with a ls6 intake has a loud whisle, im new to ls1 motors is this a common problem, i cant find any vacume leaks, it idles at around 1,300-1,500 it does have a pretty good size cam, car runs 11 20s with a six speed all motor, any info would be great, thanks.

[bills98ta]

Mine has the same whistle when it idles. I just tell people not to get to close to the ram air intake when they walk by !!! LOL !!!

[hutch1999]

my buddies 01 WS6 also does the same thing at random times.

[bills98ta]

I think it's the hole in the throttle body plate...

[Y2KPewterSS]

Might be your air pump.

[boosted 98]

i traced it down to the vacume line from the intake,my issue is that it is sucking air threw the valve cover gaskets. i put a vacume guage on the line and it idles at 35psi and when you rev it up and on the down rev it hits 70 psi, i have never seen that much vacume 25-30 is the most ive seen even on the down rev,any ideas on why i have so much vacume, it is trying to such the motor inside out. lol