Which rear axle ratio?

[wjpatton]

07. 5 B3500 6. 7 dually with 6 sp auto: 1800 RPM at 70 mph in 6th. Which rear axle ratio does this equate to?

 

[DPKetchum]

Sounds like 3. 73. Do you have the window sticker? If its a 4. 10 gear its listed in options with a price and you paid for it. If no gear ratio listed its 3. 73. Dealer can also print you a build sheet which has paint codes,options etc.

 

[wjpatton]

The only axle info on the sticker is the $325 I paid for the limited slip rear axle. It doesn't say if this is the 3. 73 or the 4. 10.

 

[SDuran]

I am pretty sure its 3. 73, as my 4. 10 is about 2000 at 70.

 

[DPKetchum]

4. 10 would be listed on the window sticker. 3. 73 is standard.

 

[TKeeler]

I am pretty sure its 3. 73, as my 4. 10 is about 2000 at 70.

Same here... https://www.turbodieselregister.com...5/190940-what-rear-end-ratio.html#post1834299

 

[klenger]

Answers here: http://www.klenger.net/dodge/general-reference/gear-speed-calculator.pdf

 

[HowarJK8]

A lot need intended for distribution your phrase likewise. We' going to need a lot of aid in the midst of your beta!

 

[SnoKing]

According to Klenger's gear page, which I had to hunt down, 1800 in 6th would be 73 with 3.73's and 66 with 4.10's. His chart is based on 265/70R17's. So the question arises as to what tires are you running. SNOKING

 

[AH64ID]

With stock 235/80R17 1800 rpms in 6th (0.63:1) is 70mph with 3.73's, so it sounds like you have 3.73's.

It would take tires that are roughly a 35" tire to be 1800 at 70 with 4.10's.