I know that there is a lot of old posts about this, but I still have a hard time with it, and I don't consider myself stupid, so maybe if I just ask again... The way I understand, the gear ratio (3.42, for example) is how many times the driveshaft turns for each time the axle (and so the wheels) rotates one time. So, does that mean that a higher gear ratio (4.10, for example) is more for heavy-duty stuff, towing, etc? and so then better with larger wheels? So why would the stock gearing in my 87 k5 be 3.73 and the stock gearing in my 87 k20 be 3.42? Does it also depend on the axles, b/c obviously the 10-bolt in the k5 is different than whatever is in the k20 (d44 or d60, how can you tell?) right? Thanks, sorry for the long-windedness.