Squeeking under load?

[MaxHarvard]

The weirdest gall dang thing is happening to my car.

I start it up... fine, timing is good, oil pressure good..etc...

Well, I have only done 2 recent things to it, Upper and lower control arm bushings, and new rubber hood stops.

I will pull it out of gear, and into reverse... then i hear this faint low level squeek, kinda sounds like a low WOMP WOMP... coming from the from the engine area, as it sounds.

It makes that noise worse when the engine is cold. Does sound worse in reverse and less in forward gear. After it warms up, the noise is almost gone completely.

THOUGHTS?!?!?! I"m killing myself trying to figure this out... timing is spot on... plugs are good.. HELP!