+1 that's one noisy engine anyways.
My LT has a windshield and amplifies all engine noises. If the noise sounds like a truck in low gear going down the road and the whining or whirring noise seems louder the faster you go, mine anyway I have tracked down to the left side of the engine. It is probably the straight cut balancer gear. There are so many straight cut gears on both sides, it could be any of them.
Straight cut gears are noisey.
Rattles, hums, whining appear to be a characteristic of the engine.
I haven't had chirps, rubbing, grinding or squeaks yet.
As Timothy Leary said, "Turn on and tune out."