How to find axle gear ratio

In case you didn't notice, the ratios are different because they are different axles haha. Also, when counting rotations of the pinion and tires, both tires should be spinning to get an accurate reading. If only one side is spinning (ie if you have one tire jacked up and the other planted on the ground,) the free tire spins twice as fast. That means you need to count how many rotation the pinion does in two rotations of the tire to get the estimation of the gear ratio

Mine won’t turn is it because I don’t have a yoke on the reared

I Bought a brand new in 2010 Ford f250 super duty FX4 4 x 4 with a 6.4 L diesel engine. Will the dealer be able to know which Dana axles I have and what gears are in the differential? No one ever changed/ touched the truck. Thanks for any help_Jim

Finally a video that helps

Tysm

hello i broke my rear diff 3.92 dodge ram 1500 5.7 hemi 2012 4X4 I can not find same model the country where I live I found something else 3.21 My question is whether you will it work?sorry for my english!!

The best description on how to determine gear ratio.

Great video straight to point perfect

Thanks for the info… that’s what was looking for 👏👏👍🏼👍🏼

Does Chevy 10 bolt have gear ratio of 3.70 ??
10 and 37 .

Excellent video..thank you so much..

Okay but, by turning the pinion to turn the wheel you came up with a 4.10:1 ratio.

Counting teeth is the exact method.

Is the difference in the two methods because you have an open differential and you should have stopped one wheel from turning? Would that then have given you the correct ratio?

Excellent video!

Thanks for the info

Simple as that. Thank you.

My grandpa sent me this lol

why did you say it was most definitely a 4.10 gear ratio then count and say it was 3.7 ? so is the spin test not right lol

Why is it written as 3.73 gear ratio but turning the pinion gear shows 4.10 gear ratio?

All the other videos talking about Multiply then divide moving decimals im like i know I don’t have to do all that great video man i gave it a thumbs up

Saved me a lot of work with the dividing the number part thanks so much

Can you switch the Inner Gears from a 1/2 ton into a 3/4 ton axles, as long as its a 44 and the same ratio? GM...

Could not have made it simple thanks man

Appreciate

hey, i now take my m12 die grinder to the junkyard with me

Thank you for post. I was curious if you could run another size pinion gear with that 41 tooth ring gear? for example could use a 10 tooth or 12 tooth instead of the 11 tooth pinion gear that's already in there? It seems logical to me that only an 11 tooth pinion gear will work with that 41 tooth ring gear. So can u use a different pinion gear with that ring gear? I subbed & liked