No, you're not, Birge. This is about what our trucks'll do, and how. Your 15" tires probably give you the same engine revolutions per mile, hence the same engine speed at a given road speed, as did my bigger tires with my lower gears. If you were to go to the same size rubber I have now(or had then; the difference in tread height is about 1") I think you'd be happiest at 50 mph, and able to sustain 55. And that is enough, really. My 4.10 set me back about $1600 all in, but I needed it worse than you do with your 4.56, I think.
I'll tell you this as well: I put 3,000 lbs of timber in the box when I had the old gears, and that made her happy at 50 mph: she just didn't like freewheeling that fast, running empty. I don't know what speed the engine was turning, but the more she is loaded, the happier she'll be at high RPM's.
Last edited by hotshoe36; 07/11/2008 7:46 PM.
