well just finished the reseal job this morning, changed the oil and started it up , let it run for awhile...i took it for a spin and it ran fine, got on it a little, but i noticed that right when i opened the throttle there was a really loud abrupt sucking noise...i thought it was strange so i parked the car got out and reved it a little and the noise is coming from right inside the upper manifold, just behind t-body...its wierd cause it is a really short noise and then it goes away if u take your foot off the gas or keep it on...another issue is that i heard what i thought was a vaccum leak coming from the back of the intake...i pinched off the hose that goes from the pcv valve to the back of the upper and i could hear the valve close and the air noise stopped...i dont feel any air escaping from the hose or any other place...any ideas...im pretty sure i hooked all hoses up right...oh and the reseal fixed the oil leak in the front but it wasnt the rear of the intake that was leaking it was something else...argh 
probably rear main or valve covers
