Ram 2500 6.4L 12.5K Ike Gauntlet
TFLTruck did a Ike Gauntlet tow test of a 2015 Ram 6.4L 4.10. Identical axle ratio and load (12.5K) to the 2015 Chevy 2500 they tested a few months ago. The Chevy gives up ~50hp and lb-ft. Surpris...
Forum Discussion
Buck50HD wrote:
The weakness of the 6.4's 1st and 2nd gear have been exposed. It's not a mystery.
My favorite part of the video is the 6.7 Super Duty with a trailer blowing by like they're standing still (21:52).
When the air is thin and grade gets steep, it's all about gear ratios. A 4.30 Ford 6.2 would most likely dominate this test.
On the other hand, there are combinations of loads and grades where the 6.4 will dominate.
I saw that 6.7 PSD and I wasn't going to mention it here but since you pointed it out... :B
I suspect part of the reason the Hemi struggled is because a naturally aspirated gas engine really looses a lot of power at higher altitudes, but having said that RAM had a field day and allowed the media to test a 4500/5500 Chassis cab with a snow plow on the front and it appeared to have struggled as well.
