Differential Gearing with W55
 

Hey all, does anybody know the differential gearing that accompanied trucks from the factory with a W55?
I have the W55 in my truck already with my factory 3.07 gearing.. It is drastically under powered with an incredibly high first gear. I have a solid front axle that will eventually be used in a SAS for my 2wd but in the meantime I have pulled the 3.90 differential out and intend to use it with the W55 until the SAS progresses more.

Thanks!

Is it a W56?
What size tires you trying to run?
Factory gear ratio is only going to help you with factory sized tires.

More info? Glad to help..:)

Definitely
2wd W55
factory sized tires for a 2wd. That's why I want to know what gearing the W55 came with from the factory. But I think the 2wd W56 is identical to the W55 (except for the first and second gears, which are lower in the W55).
Eventually upgrades will occur, but for now I just want it to drive well/properly.
Just want to make sure that I won't make it worse by putting the 3.90 over the 3.07
Thanks!