Cummins Diesel Forum banner

normal rpm running at 70mph

7K views 13 replies 14 participants last post by  Rockwerx 
#1 ·
what is everyone getting rpm wise running at 70 trying to figure out what gears i have
thanks
 
#2 ·
About 2K 3.54s

.
 
#3 ·
There should be a sticker in the glove box if it's a 3rd gen truck. More than likely you've got 3.73's.
 
#6 ·
I got a sticker in my glove box too, I'd assume there on em all. I'm about 70ish at a bit under 2k runnin 3.54's
 
#4 ·
Mine ran about 2k with the stock BFGoodies. Now runs 1850 with my 285 Toyo's. I have 3:73's.

Randy
 
#5 ·
Mine reads right around the 1850-1950 area. I know for it to be at 2k, I need to be running somewhere around 74mph. I have 3.73 gears, hope this helps.
 
#8 ·
at 70 mph, I'm running about 2100 0r 2150. I have the stock 265/70 on 17's. I have the 3.73 gears.
 
#9 ·
dont remember what it was with stock tires, but with 35's and 3.73's about 1850rpm
 
#10 ·
I'm still running those stock little stock tires and I hit around 1700 - 1800 RPMs @ 70mph. Running 3:73 gears.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top