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How do I determine my gear ratio?

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How do I determine my gear ratio? Empty How do I determine my gear ratio?

Post  Steve February 23rd 2021, 8:54 am

I'm going to use my Gran Torino as an everyday driver. I'd like it to be quick off the line but not real interested in top in speeds. I will occasionally go on the hiway to travel to car shows. 100-200 miles away. Any suggestions for gears?

Steve

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Post  bosshoss February 23rd 2021, 7:46 pm

what transmission you running?
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Post  NHTorino February 23rd 2021, 10:30 pm

C6 Automatic

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Post  stanger68 February 25th 2021, 9:33 am

You can do it the longhand way and calculate your tire size and rpm at cruise speed. Or guess at it. 3.50 is a great all around gear, 3.73 is pretty good on street depending on tire size. I wouldn't recommend going lower than that without an overdrive. Go to summit and buy an auto math handbook if you dont know the formulas.

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Post  NHTorino February 25th 2021, 11:59 am

Thank you very much.  I just ordered the book.

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Post  wickettoby1 February 25th 2021, 10:50 pm

Do yourself a big favor and go to the apps store and download the TREMEC Toolbox, great app that doesn’t cost a penny.

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Post  Uglytruck February 26th 2021, 12:06 pm

Or go here:  http://www.wallaceracing.com/Calculators.htm    I use it all the time and it's free.

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Post  738drvr March 3rd 2021, 6:35 pm

Wallace racing calculators.

3.50 gear will be perfect. 3.70 will be a little better off the line. No lower unless you have overdrive.
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