2001 Sierra lift?

[01 sierra]

Yeah mines my daily driver so I want to keep it looking good and still be able to go in the woods. I had a little rubbing the other day at full lock going over rocks

Jared's Galaxy S4

 

[Cowboy Cadillac]

I plan to leave mine as stock looking as possible.I need to get a chance to bomb it through a mud pit or run it down the backroads to make sure it will clear under the harshest thrashing.

 

[01 sierra]

Well today I replaced the rear diff fluid then whent trail riding. But I tried to climb a sand hill that I have climbed before but I could not make it to the top. The hill is all very lose sand. I tried to get a good run at it but didn't matter how fast I went after I got half way up it I would just come to a stop. It would slow down really fast as soon as I started going up the hill. Once I came to a stop it didn't matter how much gas I gave it the tires would not spin. Last time I climbed it I could dig holes with all 4 tires if I went to slow up the hill. What could cause it to not be able to spin the tires?

Jared's Galaxy S4

 

[Cowboy Cadillac]

If you didn't change your gear ratio to match up with your new bigger tire size you'll lose the torque needed to spin them. Its a fine line between low enough(numerically higher) gearing to roast the tires and a high enough(numerically lower) so you aren't on the rev limiter on the highway.

I would suggest upgrading to 4:10 or 4.56 gears to maximize both scenarios.

 

[01 sierra]

I know I need to regear. But I have spun all 4 tires at once with the 35's. I left a black mark going up the rock.

Jared's Galaxy S4

 

[Cowboy Cadillac]

Possibly transmission issue then I would guess.

 

[01 sierra]

Changed the transmission fluid it shifts better and climbs a little better but definitely need to regear. The tires are really good if I have it in 4lo. Had to pull out a buried jeep then pull it out of the woods through 4 more deep soupy mud holes. I didn't even need to really junk him just tighned up and pulled. I dug some good trenches to.

Jared's Galaxy S4

 

[01 sierra]

Ok so went and got an estimate to regear. Plan was to go to 4.56's but they said for a daily driver it will run to hot. They said 4.10's is what I need. So for parts and labor was $2500. That seams really high. Going to check the one other place here that can do it but I think I am going to be doing it myself. I found gear sets and bearing kits on summit racing for $550 then I just need axle bearings and seals for rear and front axle seals. I have a how to for both diffs. So I should be able to get it done. I plan on doing the front diff one weekend and then the rear diff the next weekend. I still have to drive it to work during the week.

 

[NMRam]

4.10s will work, but 4.56s would be better. I seriously doubt you would have any problems with overheating unless you were running 90+ down the highway for miles and miles on end.

 

[ScottyBoy]

$2500 to regear is beyond expensive.