Knocking Sound From Rear End ONLY WHEN GAS Is FLOORED????

Ok guys got a general question for you, any ideas of what I need to look at to repair my truck would help me out a bunch. So im in my truck raising hell in the rain. Im burning tires off and taking off sideways to have fun. I was trying to throw the truck down to first gear when coming to a yield sighn so i could sling it sideways and I ground the gears pretty bad because i accidently ran it into reverse. Nothing seemed to happen really then, i just backed off and ran it into fist and continued on to playing. I drove a couple more miles and as i was turning into a parking lot there was a very noticable knocking sound coming from the back of the truck. loud metal on metal knocking sounds. The truck only makes the knocking noise if it is in second gear, and i have the gas floored. If i drive it and shift normal, and take off gradually building speed it makes no sound at all. Does anyone have a clue were i should start to figure out what i have broken. Im guessing i broke something off inside the rear end. Not sure exactly were the sound is coming from, but it's from the back part of the truck for sure. maybe chipped a gear or something? I have 35x12.50x20 mud tires and wheels and a 6" pro comp sups lift, and my turck is a 6 speed manual. The lift killed my acceleration, and second gear has been taking a toll. I drive in a city mostly and have to be able to get up and go. Im not truck smart at all, simply trouble shooting so i can take the truck some were to have it looked at. Thanks guys
I will get back to you with more info later, and keep the post updated

 

no need to be all pissy, and the truck still drives. what can I do to have it fixed. what can I expect to go wrong from here if i dont get it fixed soon? what does the diff do for the rear end? Thank You

 

hell at least he was honest.

 

But for your problem

Did you destroy your crush sleeve?
thats my guess

 

well thanks for the info and site, I wasn trying to be bad ass lol. I was being a dumb ass and fucking around. obviously i fucked up, and i deserve what I get. We are all twenty years old once in our lives. I dont want to argue about the quality of my lift. Im sure you know way better than me on that one. I was wanting to do something to help the truck take off better anyways since the tires kill my acceleration and wear my stuff out way faster. What could I do to help my truck out as far as preserving the tranny and clutch and fix the problem at the same time, since I already screwed up the diff most likely? I figure it needs a lower gear anyways. Im looking for your advice. what would you do to make the truck better now. besides replace the lift because it sucks hahaha. thanks man

 

If it is the ring and pinion gears are jacked up, what would be the best gear ratio to replace the torn up one with, to help my truck take off better?

 

4.56 or 4.88 gears but don't forget to get a matching set for front diff since your are 4x4

 

pay to play! Its just Money!

 

lol

 

thanks for the help. is this something that could be done myself? or if im payin someone else, what kind of cost am i looking at? Do you know any sites that i can go to to learn more about how gears work, and what ratios do what?

 

but he was being a badass raising hell on the city streets, unleashing his inner Drift King

 

search on here

 

Also check u-joints? Mine made a loud clunk/knock before going out

 

Thats a hard lesson to swallow

 

Considering your apparent lack of automotive knowledge, I would say that you could NOT do it your self. BTW, if you change the gear ratio in the rear, you also have to change the front to match. good luck.

 

<-------raises hell all day, son

 

just money. sucks for sure to have to pay, but i wanted to re gear the truck any ways so it just made me take the leap to go ahead. No worries about the money. Obama makes sure daddy keeps a fat pocket from deployments to middle east. Thanks to you guys tax dollars ill have new gears in no time.