[NCtoy76]

want to run a 4 inch lift and 37 inch hummer tires on my 97 psd crew cab 4x4, it has an auto trans. was thinking 4.56 or 4.88, what would u guys run,,,, i need this truck to tow alittle

 

[FordCarnage]

4.56

 

[LeviGarrett76]

with the deeper OD of the auto, and since youl be towing, i say 4.88

 

[JJS]

despite the o.d., with the diesel redline i'm gonna vote 4.56. you should still have great power.