Quote:
Originally Posted by Pygmy Yeti
How does one check what the rear-axle gear ratio is?
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There's 5 ways.
1: Crawl under and look on the axle, there should be a plate/tag with the ratio on it (some buses will conveniently have this listed somewhere with the VIN sticker).
2: See if the bus has it's "build sheet" (IH calls them "Line Setting Tickets").
3: Get the VIN and call a dealer who can pull up the vehicle information (including recalls and warranty work).
4: Raise a tire, give it exactly one revolution and count the driveshaft revolutions (double this number since you are only rotating one tire).
5: Disassemble the rear differential and count the gear teeth.