Is anyone running 33s with 4.56 gearing and the 6 speed alli? How does it do on the interstate? RPM @ 70? 80? Im wanting to go smaller with my tires. Im currently on 37s. I dont want to regear unless i have to. Or does anyone know a good site i can use as a calculator that will take into consideration the internal gearing of the allison? Thanks
33x12.50x20 with 4.56 gears 6 speed?
- Thread starter Bfox111
- Start date
^this. 4.10s might makes sense with 35s but I am a big fan of the way my buddy's lmm drives with 35s and stock 3.73s
33" I'd use stock 3.73 gears. 35" I'd use 4.10s. 37" 4.56 is perfect. All in those I said is because the driveability would be better in towing and daily driving. I had 33 on 3.73 and it was perfect. 35 on the 3.73 was a bit lugging for towing. Now I have 37's and they suck on 3.73. I'm still running 3.73, soon will be upgrading to 4.56 to help with towing. Those are better for 6 speed transmission.
I just regeared 3.73 to 4.30 I made my own calculator and it was very close.
33" Tires with 4.56 gears @80 you would be at 2366 RPMS
33" Tires with 4.10 gears @80 you would be at 2127 RPMS
33" Tires with 3.73 gears @80 you would be at 1935 RPMS
Stock with 265-70r17 (31.6") @80 would be around 2005 RPMS
33" Tires with 4.56 gears @80 you would be at 2366 RPMS
33" Tires with 4.10 gears @80 you would be at 2127 RPMS
33" Tires with 3.73 gears @80 you would be at 1935 RPMS
Stock with 265-70r17 (31.6") @80 would be around 2005 RPMS