Quote:
Originally Posted by N2TRUX
Karl is spot on. Everyone says build it, they are cheap. Survey says BS. Unless you really want to learn to do it yourself, setting up a GM ring and pinion is no picnic. It requires specific tools that are not commonly available, and it can be a lesson in frustration.
I have found the most economical option is to find a replacement axle. They can be bought very reasonable and are not hard to find. Locating one with 3.73 gears is a bit harder than the more common 3.08 or 3.42 but they are out there.
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Adding to what Ken stated, the GM 10 Bolt rear end in these trucks is actually a good replacement. The pinion on the 10 bolt has a larger diameter then the 12 bolt pinion, therefore the 10 bolt is a bit stronger and can be found at a reasonable price. Finding one with a 3.42 or 3.08 would yield you a little better MPG if you are worried about that.