4lo Howling. Help!

So I just recently regeared to 4.88 Nitro Gears. I broke the gears in and got my oil changed. Everything works and sounds great in 2WD and 4HI but in 4lo I dont remember it whining this loud. Im not sure if every transfer case is different with how it sounds in 4lo but the sound increases as I increase throttle.

I attached a link below to the youtube video of the sound in 4lo. Is this something I should be worried about?

https://youtu.be/_b_9QT1bY9Q

 

Forgot to mention I got an ARB front locker installed too. Not sure if that can cause the loud howl?

 

Sounds normal from the video. 4Lo is always louder. With 4.88s everything is moving a lot faster that stock.

 

I hope that’s the case. I really would hate to have to open that pumpkin again.

 

Sounds just like mine! I get that fluttery whine when over 10mph too

 

Sounds like my reverse

 

totally normal sounding

 

So yours sounds like that too?

 

every 4x4 i have owned have sounded like that in 4 lo

 

Sound normal

 

Thanks for confirming. For some reason it sounded louder than before. I guess im just trippin.

 

Everyone says it’s normal BUT my last truck sounded the same and it bothered me so I put a new T-case in. Noise gone.

My current truck is silent in 4lo as well.

 

Nice, thats an idea.

 

With your truck being so new I would take it in to the dealer since it MIGHT be the tcase.