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Re-Gear 4.11 and 4.1 ratios @ RockAuto

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I think I'll order a "tab"
I think I'll order a "tab"
Posts: 49
Joined: July 29th, 2018, 1:03 pm
Stroker Displacement: 4.6
Vehicle Year: 2000
Vehicle Make: Jeep
Vehicle Model: TJ

Re-Gear 4.11 and 4.1 ratios @ RockAuto

Post by TJryder » November 5th, 2018, 8:32 am

Hi guys,

I am puzzled as I am sourcing material for re-gear.

I am aiming to 4.1 ratio but.... Rock auto says:

4.11 ratio for Dana 35 (rear end)

https://www.rockauto.com/en/moreinfo.ph ... 73&jsn=727

4.10 ratio for Dana 30 (front end)

https://www.rockauto.com/en/moreinfo.ph ... 73&jsn=729

Tech support is light years away from what Russ and other fellow builder offer here so I dared to ask here.

Have I selected matching pair and Rock Auto has a typo error or is there really 4.11 an 4.10 ratio? :? :shock:

With kind regards, M
°O I I I I I I O°

Posts: 13
Joined: October 5th, 2018, 6:07 pm
Vehicle Year: 2001
Vehicle Make: Jeep
Vehicle Model: TJ

Re: Re-Gear 4.11 and 4.1 ratios @ RockAuto

Post by Netpackrat » November 7th, 2018, 11:12 am

Look at the specs for each where it shows the tooth quantity for both the pinion and ring gears. They are different numbers for each gear set, so they are going to be very slightly different ratios. This is generally considered close enough, since you won't be running in 4wd on hard surfaces (even though most of us here in Alaska do it for much of the winter).

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