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Old 12-12-2009, 06:23 PM   #1
78-5.3
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3.73- 4.10 gears

hey any of you guys have either a 3.73 or 4.10 gears in a 2wd 5.3 4.8 or 6.0 truck with an 4l60e i was wondering about RPM at hwy speeds say 65 MPH thanks

Last edited by 78-5.3; 12-12-2009 at 06:24 PM.
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Old 12-12-2009, 06:48 PM   #2
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Re: 3.73- 4.10 gears

interested also
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Old 12-21-2009, 05:55 PM   #3
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Re: 3.73- 4.10 gears

i have 3.73's in my '05 w/ 5.3. does right at 2k rpm with the 4l65e and 31.25" tall tires (285/50/20)
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Old 12-21-2009, 07:15 PM   #4
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Re: 3.73- 4.10 gears

i will look tonight when i go out, btw i have 4.10 and a 5.3
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Old 12-21-2009, 07:26 PM   #5
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Re: 3.73- 4.10 gears

my dad had a 99 6.0 4wd with 4.10s abd it do about 2200 at 70 thats all i remeber but that thing would haul
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Old 12-21-2009, 08:52 PM   #6
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Re: 3.73- 4.10 gears

Quote:
Originally Posted by munger View Post
my dad had a 99 6.0 4wd with 4.10s abd it do about 2200 at 70 thats all i remeber but that thing would haul
yeah i think im going 4.10 with my 5.3 and 4l60e in my 78 2wd
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Old 12-21-2009, 10:32 PM   #7
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Re: 3.73- 4.10 gears

what are in it now and are you close to getting it done
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Old 12-22-2009, 09:00 AM   #8
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Re: 3.73- 4.10 gears

Quote:
Originally Posted by munger View Post
what are in it now and are you close to getting it done
2.76 looking fo a 4.10 now
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Old 12-26-2009, 05:28 PM   #9
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Re: 3.73- 4.10 gears

You guys can use a gear/speed calculator like this one from Richmond gears to see just what a gear change will do for you.

http://www.richmondgear.com/01calculators.html

Just fill in the blanks and hit calculate.
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Old 01-20-2010, 09:35 AM   #10
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Re: 3.73- 4.10 gears

Or here's another one.

http://www.markwilliams.com/calculators.aspx
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