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gear ratio differences

888 Views 2 Replies 3 Participants Last post by  jerrym3
What kind of speed / rpm differences will i notice with a 3.70 vs a 3.50 gear ratio. i have a 390 with a 3 speed manual.
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There are alot of calculators online for just this comparison. One is here.

Don't think you will see much of a difference going up that little. I recently went from 2.75 to 3.55. Still comfortable at 65-70 rpm wise with the new gears. (3 speed auto trans.)
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