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454ss gears??

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Old Nov 24, 2007 | 01:46 PM
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From: Keller tx
Default 454ss gears??

so im tryin to find out what gears i have in my truck stock it came 3.73 but i the 2nd owner but i got a buddy with the same truck with same gears n he can cruise at a higher speed on the high way than i can so im starting to think i have 4.11's? so my question is if it came with 3.73 would it have a good amount of clearance in the case or would they barely fit?? here is a pic of mine





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Old Nov 24, 2007 | 02:19 PM
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divide your ring gear teeth by your pinion gear teeth that will give you your ratio.
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Old Nov 24, 2007 | 02:26 PM
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Another way to figure it out is... spin the tires 1 rotation and count how many times the drive shaft spins and you have your gear ratio.

if the d-shaft spins 3 an 3/4 rotations then you hve the 3.73 and if it spins just over 4 times then you have 4.10s and so on.
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Old Nov 24, 2007 | 02:32 PM
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Originally Posted by purdueranger
Another way to figure it out is... spin the tires 1 rotation and count how many times the drive shaft spins and you have your gear ratio.

if the d-shaft spins 3 an 3/4 rotations then you hve the 3.73 and if it spins just over 4 times then you have 4.10s and so on.
Yes another good way if your pan is not off!!
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Old Nov 24, 2007 | 02:45 PM
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yeah i did the turn the wheels thing already n it made 3 3/4 thanks man i jus toook of the cover to take a look n check a diff way
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Old Nov 24, 2007 | 06:36 PM
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what size rubber do you run on and what does he run? This will affect RPM too.
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Old Nov 26, 2007 | 07:55 PM
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yeah i run 17s he runs stock size 15's
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