Changing the gears in my suburban
I have decided to change the gears in my suburban (2008 5.3L 4sp auto), but not sure how much of a change to make. I currently have 3.73 gears, and was thinking 4.30 because 4.10 doesn't change much,...
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I like to tow around 65mph, which puts me about 2600rpm +/-. I pull in direct, or 3rd in my 4 speed. It can't really pull OD even on flats unless there is NO wind, which never happens in the Texas panhandle. It does downshift on minor rises in the road, which puts it in 2nd and 4400rpm or so (which it can gain speed rapidly at that RPM. From what I have seen, 4.30 is available, but I have not narrowed it down to make sure yet.
