2011 1500 Sierra Regear For 35's

stryker755 · August 10, 2011

I put a 6" Fabtech and 35's on my '11 Sierra and want to regear. Since I have the 6spd tranny, is 4.56 the ratio I want to go with to get it back near stock and be able to tow something? I am thinking Motive Performance gears front and rear and was quoted $1300 OTD at a local shop who has done many gear jobs. Any suggestions?

uh6tdrvr · August 11, 2011

I haven't done gears but I would think that would be the best option. I think that there should also be a 3.73 option for the 5.3. I probably the exact match would be 4.1 or so, i dont have a rpm calculator but i would go with 4.56 to equal out the weight/aerodynamic difference of the lift. BTW, we are going to need to see a picture of it....moderators, shouldn't that be in the "modification" rule book, to add pics of mods?

stryker755 · August 11, 2011

I haven't done gears but I would think that would be the best option. I think that there should also be a 3.73 option for the 5.3. I probably the exact match would be 4.1 or so, i dont have a rpm calculator but i would go with 4.56 to equal out the weight/aerodynamic difference of the lift. BTW, we are going to need to see a picture of it....moderators, shouldn't that be in the "modification" rule book, to add pics of mods?

Sorry about the pics, was having trouble with uploading them off the iPHONE.

ERIE_ONE · August 11, 2011

I haven't done gears but I would think that would be the best option. I think that there should also be a 3.73 option for the 5.3. I probably the exact match would be 4.1 or so, i dont have a rpm calculator but i would go with 4.56 to equal out the weight/aerodynamic difference of the lift. BTW, we are going to need to see a picture of it....moderators, shouldn't that be in the "modification" rule book, to add pics of mods?

Sorry about the pics, was having trouble with uploading them off the iPHONE.

NICE truck!

jimmyboy8301 · August 11, 2011

you would want either 3.73's or 4.10's. with the 6 spd having 4.10's is like having 4.56's with a 4 spd.

jimbrown1 · August 12, 2011

The 3.73 with the 6 speed tranny is comparable to the 4.56 in the 4 speed up to 4th gear. The 4.10 gears would be comparable to 4.88 in the 4 speed. I'm still trying to post a table showing this information but it just won't let me do it!!

blackout07 · August 12, 2011

4.10. And that's a damn good price.

uh6tdrvr · August 13, 2011

very nice!

Stevens03 · August 13, 2011

Very nice. I have 3.73's in my truck with the 6.2L and they rock. Since you have the 5.3 which obviously has less power than the 6.2L, maybe 4.10's for that extra punch down low.

jbrown2011 · December 20, 2011

New to this site, but my 2011 GMC Sierra Z71 with the 3:42 seems to have a ton more torque than my 2006 4 spd and the 3:73's. I really want to lift and run 33's but with all the computers now the dealer has me worried about my warranty or the loss of if I do it.

lbkthree · December 21, 2011

My 11 has 3.08 stock so if I were to do 35's I would install 3.73's, which I happen to have lying around from my last truck that had a 4 speed. If I had 3.42's I'd probably consider 4.10's

jimmyboy8301 · December 22, 2011

if you are only gonna run 33's then don't regear

mossbum · December 24, 2011

if you are only gonna run 33's then don't regear

im currently running 33's and seriously considering going to 4:10 gears. i feel that would give a good balance of off-road and highway performance.

Dave4x4 · January 1, 2012

I have similar setup going on in Jan. and in feb. hopefully will be putting on yukon 4.10 gears. The rpm range will be about the same just a little bit higher. Right now at 2000 rpm I'm doing about 75-80 mph.

jimmyboy8301 · January 1, 2012

with the 6l80 and only running 33's 4.10s would really be overkill. i had 4.10's with the 4L70 and 6.0 on my '08 with 35's and it was plenty along with EFI Live.