Supercharged111
Truly Awesome
- Joined
- Aug 20, 2015
- Messages
- 12,906
- Reaction score
- 15,892
Be advised that a K2500 at 2500 RPM in OD and 4:10 rear is traveling about 80 MPH.
3500 offers 103 MPH.
Pulling at 55-65 MPH you'll range 1700 to 2200 and this is where you want, at the least, be well into the cam torque curve.
In no way would you aim at a "2500 to 3500" torque peak. Operating in that high RPM range would require 3rd gear on every knoll when operating at normal speeds
FWIW:
Input Parameters Are the Following:
Differential Gear = 4.00 to 1
Transmission Gear = 0.75 to 1
Tire Diameter (Inches) = 31.00
Vechicle MPH = 60
Computation Results:
Computed Engine RPM is 1952
Critical thinking will save time and material, and prevent disappointing outcomes.
Sent from my SM-G965U using Tapatalk
I was alluding to a downshift into 3rd rather than steady state pulling at that RPM. If 3rd gear can't get it done then you're coming up short (automatic).