My '85 K5 came with 31x10.50.15 tires and has a 3.08 axle ratio. I am going to install 33x12.50 within a week and was wondering if I will cause any harm using such low gears. I realize that I will lose some low-end but does this harm the tranny or motor at all?? I would like to change the gears within the year if I find some$$$. Do you think that 4.10 would be a good choice for the 33's or possibly 35's down the road?? I drive mostly around town with little highway or off-road at this time. Almost forgot ...Tranny is a 700R4. thanks for the help!!