How to figure out the power of 2014 Ram 2500 HD 6.4L HEMI without going to the dyno? Also, how to compensate for being a mile above sea level? One way is to use the GPS based devices to measure 0-60 MPH runs and to have the power loss formula handy.
We know that one mile of elevation, approximately 75F ambient temperature, and low Colorado humidity of about 20% yields about 17% power loss for normally aspirated engines. It the means the big 6.4L HEMI in this 2500 Ram that is factory rated at 410 horsepower and 429 lb-ft of torque is now making 340 hp and 356 lb-ft at the crank.
First 0-60 mph run showed 9.72 seconds on the SoloDL and 9.67 seconds on the G-Tech Pro. Second run revealed 10.15 and 9.90 seconds respectively. Best run clocked in at 9.59 seconds, and the average of all runs came to 9.80 sec 0-60 MPH acceleration.
Check out TFLcar Hall of 0-60 MPH to see how some of the other trucks did.
Braking performance is even more important than acceleration when you are walking about work, carrying, and towing. The G-Tech Pro allows us to measure 60-0 MPH distances using GPS. The G-Tech Pro device recorded 60 to 0 stopping distances of 135 feet and 120.8 feet an two consecutive runs. There was just about one minute between tests, and the brakes felt extremely strong. They picked up some heat and recorded an excellent 120.8 feet on the second run. The average stopping distance was 127.9 feet. We did not perform a brake fade test this time.
Andre Smirnov is a life-long automotive enthusiast, writer, reporter, and software engineer. He has been writing and reporting at TFL since 2011.