Whats your RPM @ 75 mph?

[Mikey]

I just installed a 3.42 rear gear and I have 35" tall tires (Now 33" worn out and broke as a joke)
As you can see in the photo, I am at about 1500 RPM @ 75 MPH (or Just a tick above on both)

Curious to see what you guys are at.

Keep in mind, I also have a six speed.

 

[super diesel]

Your ready for the 225mph run!

I'm running stock gears and 33's so I'm around 2000rpm IIRC. I'm limited to only 171mph or so.

My tires says different though. :denied:

 

[GeneralTJI]

06 w/ 6 speed, 265's I see 1700-1800rpm iirc

 

[whitetrash21]

South of 1500, 40'd and 3.73's.... i can supercruise though

 

[Chevy1925]

about 1800-1900 at 75 in my truck. 37s, 3.73, 5 speed

 

[D-MAX Mafia]

With the 4.56 gears I was at 2100 now with the 3.73 gears I'm right at 1700 in 6th gear @ 75. Thats on 35" tires.

 

[paint94979]

2300 or so with 5 speed and 31"s

 

[TheBac]

~2300rpm with 285s.

 

[Mikey]

Thanks all for your input.
Ill be doing some mileage tests next,
Although My best to date for mpg has been a hand calculated 17.8 mpg. avg speed of 65-70mph. This prior to a bunch of mods such as sdp egr/heater grid delete intake, 3" boost tube, rdl up pipes, banks intercooler, flex-a-lite, and snow mpg max. Will do a vegas run at the same speed and see what happens.

 

[TeaBagger2006]

90@2k

 

[durallymax]

Haven't really checked when driving the truck, but by my calculations with the 265/75R16's, stock 3.73's and the ally.

2100 in 5th
1800 in 6th.

In the semi running 285/75R22.5's, 3.36 Rears and an Eaton 13OD (0.73 big hole) 1,570RPM's