* 3.08: A relatively common ratio, offering a good balance between acceleration and fuel economy.
* 3.23: Slightly lower gearing than 3.08, providing better acceleration at the expense of some fuel economy.
* 3.42: More aggressive gearing, ideal for towing or off-road use, but lower fuel economy.
* 3.73: Even more aggressive gearing, best for towing heavy loads or off-roading, with lower fuel economy.
To find the exact gear ratio for *your* specific 1986 Chevy S-10, you need to check one of the following:
* The Vehicle Identification Number (VIN) decal: Sometimes, the axle code is listed on the VIN sticker (usually located on the driver's side dashboard). This code can be used to look up the gear ratio in a parts catalog or online database.
* The Driver's Side Door Jamb Sticker: This sticker may list the axle ratio.
* The Differential Tag: Look on the differential housing itself for a tag. This tag will often show the gear ratio.
* Manually Count the Teeth: This is the most accurate method but requires removing the differential cover and counting the ring gear teeth and the pinion gear teeth. The gear ratio is calculated by dividing the ring gear teeth by the pinion gear teeth.
Without knowing your specific truck's details, it's impossible to state the exact gear ratio. You'll need to use one of the methods above to determine it.
