Im waiting on my Silver '09 Laramie, 20 inchers and a 3.55 rear. I realize that the 3.55 is an open axle rear end so when in 4 wheel are both the front wheels locked? Is the gearing the same in the front as in the rear? I am trying to convince myself that my 3.55 will do me right and I will not be sorry that I did not opt for the posi rear end.

 

You shoulda got 3.92 anti-slip. I upgraded to 4.10.

 

there is NO posi rear end just a LSD and the front will only have 1 wheel as well.

you could always put a locker in the front though.

and i have the 3.55, they suck. im going to chance the the 3.92

 

what did you do with your old 3.92 front/rearends? would you be interested in selling if you still have them? if so, how much?

 

Which is the less expensive route to take...replace the rear or the front differential with a locker?

 

well a good locker will run you about 1,000 just in parts so IMO replace the rear (thats what im going to do)

 

going to 4.10's, did you have to change your carriers out also ??

thanks

 

I've always heard that two ratio levels are fine. I went from 3.55 to 4.10 in my f150 and did not need a new carrier. Any lower, and I would have. 3.92 to 4.10 shouldn't be a problem in that regard.

 

You make it sound like the LSD is not a good unit. It works fine so far for me. Maybe I am just reading your statement the wrong way.

To OP, if you put your truck, with 3.55's, in four wheel drive you will essentially have on wheel in back and one wheel up front putting power to the ground.

 

no im saying that the LSD is the only one to get. the open dif sucks