I'am looking into changing out the diff. How can i find out what my gearing ratio is now? and what gearing ratio would improve my car?
If your car is a manual, it has a 3.15 final drive ratio. If it's an automatic, it has a 3.91. What do you mean "improve?" For better acceleration and buzzier highway travel, you want a higher number. For better mileage and less "pep," you want a lower number. With a stock motor, you won't want to stray too far from the stock ratios.
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Stay with the stock ratio unless you are running a LS1
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