How to determine rear end ratio
#1
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How to determine rear end ratio
Here's a question. How can I tell? Is there a way without crawling under and reading the numbers off the diff?
I know that I am getting the LSD in my 01. But how can I tell which ratio?
I know that I am getting the LSD in my 01. But how can I tell which ratio?
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Look at the tag under the hood near the grille or in the glovebox. A small white tag will give you the info. Hope this helps you out, cumminsboy
P.S.- somebody correct me if i'm wrong please.
P.S.- somebody correct me if i'm wrong please.
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jack up the rear diff, put the tranny in neutral.
spin a tire slowly. if the pinion rotates just over 4 times for one revolution, you've got 4.10's. if it's about 3 and a half times, guess what ya got?
spin a tire slowly. if the pinion rotates just over 4 times for one revolution, you've got 4.10's. if it's about 3 and a half times, guess what ya got?
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#11
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so do all manuals have a 3.5 ratio, i've heard guys say that their manuals came with 4.10's. I can't imagine having 4.10 gears, I top out at 80-85mph right now with 3.5
#12
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You can also talk to a service manager at a dealer and he can type your trucks serial number into his comp and print you out a list of all that the truck originally came with, it will also tell you what type or axles you have as well as the gear ratio.
~~~
IRT Shovelhead: my 1999 quad cab shortbed 4x4 automatic ran at 1900 x 60 mph with stock tires and I'm running 4:10's
~~~
IRT Shovelhead: my 1999 quad cab shortbed 4x4 automatic ran at 1900 x 60 mph with stock tires and I'm running 4:10's
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