Rpm @ 70mph

[Tsscontractor1]

Wanting to know the RPM @ 70 MPH for 2022 3500 SRW or DRW with high output and 3:73 rear axle running empty?

Thank you sir,
Kw

 

[superjoe83]

Wanting to know the RPM @ 70 MPH for 2022 3500 SRW or DRW with high output and 3:73 rear axle running empty?

Thank you sir,
Kw

I dont have the exact rpm, but around 1700-1800, 22 drw, the srw trucks would have a slightly lower rpm since the tires have a larger diameter

 

[tchur1]

Srw and if I recall it’s about 1800. 3.73 rear end

 

[Tsscontractor1]

I dont have the exact rpm, but around 1700-1800, 22 drw, the srw trucks would have a slightly lower rpm since the tires have a larger diameter

True- I wonder if anyone is running taller tires on the drw without it looking bad?

 

[Brutal_HO]

~1650-1700 on any SRW 3.73 truck. (~33" factory)

~1750 on Dooley. (~31" factory)

Need more details on tire size options.

35's+ on DRW will be detrimental to mileage and power (in 6th gear).

FWIW, my HO SRW with 285/65R20 runs right about 2K RPM @~85MPH (empty.)

 

[Tsscontractor1]

Thank you sir!
Curious what 33" highway tires would look like on down now

 

[Brutal_HO]

I missed the running empty part.

35"'s would be a big deal running empty.

If you're empty, why the 70MPH?

The worksheet I use and this online tool (blocklayer) differ, but you can play with this to get an idea the effect tire size throughout the whole shift schedule.

Gearing Calculator | RPM and Tire Diameter to km/h - mph with Shift Tracer

apx6u.app.goo.gl

 

[John Jensen]

My 2020 3500 HO Crew Cab, 4x4, 3.73, 275x70-18 tires (stock size) runs 1945-50 RPMs @ 80 MPH, and 15-16 MPG.
I lost my 70MPH data but recall it to be 1850-1860 RPMs

 

[AH64ID]

1705 for a SRW and 1779 for a DRW, using the OEM rev/mile specs. That’s empty or loaded in 6th gear. Empty vs loaded will not have an appreciable change in rev/mile if the tires are properly inflated. 5th gear obviously would increase the rpms to 2084/2175 respectively.