Auburn lsd with 5.29

So I just hit the 1k mark with my new gears. Just had the new oil put in. I asked when my new ones due from normal driving said 30k but they also stated Auburn’s don’t like synthetics. I got this done at Arizona Driveshaft. Pretty good place.

 

How are the rpms? At highway speeds?

 

Good folks at AZ Driveshaft, that is the only place I have ever taken any of my driveshafts for work

 

Rpms are roughly as follows
2100-65
2600-85

mpg just in case anyone asks, I lost about 1 hwy mpg. I’m now at 12hwy. I’m ok with it transmission is happy with it and it takes off.
Higher speeds you kind of lose the passing power not as quick to go at around 75mph or so but hey no one needs to be doing 100mph.

 

I love my 5.29's, I have not seen any problems with passing on the highway

 

I am still in the breakin period for my gears and LSD so i have not gone hard on them
I am running 2250-2300 rpm at 70mph on 295/70/18 (34.3"x11.7")

 

I’m surprised to see a loss of mpg. Is this hand calculated?

 

Yes the speedometer is right on point as well. I drive around 80-85 keep up with the flow of traffic lol if I was at 65 it’s another story.

 

Yes sir, 80-85 here in Arizona is par for the course

 

What size tire are you running?

 

First tank of gas as I am breaking in the 529s and Auburn. Averaged 13.4mpg which is just below my truck average of 13.7 before the gears. I am on 295/70/18 which is 34.3x11.7
My speedometer is still off by the same amount - 70 on the speedo, 72 per the gps

 

sorry, I am running 35’s

 

Break in period is over, have final oil and additive in now. Will be a while till i fill up again since i just installed a 46 gallon tank, but it looks like my MPG will be holding around 13-13.25. I have not floored it yet to when it shifts at WOT, but it does take off faster from a stop.