2020 Ford 7.3L Ike Gauntlet

ShinerBock wrote:

4x4ord wrote:

ShinerBock wrote:

4x4ord wrote:


The run is only 7.6 miles long. The average incline is a 5.3 % grade with the top part being steeper. Godzilla averaged 52.4 mph. The Duamax ran full throttle pulling 30k at about 38 mph average speed. The math works out that it only developed an average of 341 hp at the crank during that run. Godzilla had to develop nearly identical HP to pull 16 k up at 52.4 mph.

Plotting from the sign on the on ramp in Silverthorne that they use as a starting point to the traffic lights at the top at the tunnel that they use as the end is more than 7.6 miles. Also, we are not talking about the 30k lb trailer runs the diesels made. We are talking about the 16k trailer runs that Fish posted earlier in his usual attempts to throw dirt on other brands. What I am trying to tell him is that even the new Powerstroke would have a similar 8:XX time because the test is limited to 60 mph.

How far is it 7.7? The point I'm making is that there wasnt a whole lot of extra power on tap because the Duramax only produced 341 hp with wide open throttle in the 30k test. Do you think, based on these test results, that the Duramax would out pull a 7.3 gas engine towing 16 k lbs at a more typical 3000 -5000 ft elevation.

It is almost 7.9 miles based on Google maps and it starts at 8,835 ft and ends at 11,135 ft. So the best possible time a truck can get is 7:54 seconds IF it starts out the run at 60 mph and stayed there the whole way. This is not the case and it takes some time to move a truck towing 16k from 20 to 60 mph up an incline above 8,000 ft altitude.

And yes I think the Duramax would still outrun the 7.3L at 3,000-5,000 ft because the engine will make more power than it does on the Ike. As I stated in another thread, the power an engine makes is not static and is always changing depending on many external conditions and engine design. Not to mention the gearing and trans programming also makes a huge difference in how well the engine can stay within it's power band.

Wouldn't you expect a naturally aspirated engine to be at a much greater disadvantage than a turboed engine at higher elevation? As far as the transmission tuning goes it looks like the Duramax/Allison is tuned to be pretty aggressive on its shift points and with a ten speed I think you can feel pretty confident that the Duramax will normally be revving in the 2500 - 3000 rpm range under full throttle.

7.9 miles vs 7.6 and 2300 ft of elevation gain instead of 2120 doesn't sound like that big of deal but it actually does make it harder to make the numbers work in a way that is believable .... especially for the Powerstroke to have pulled off what it did at 2200 rpm. It almost had to have been making more like 425 HP instead of 400 at the rpm it pulled the hill at. And according to the video I thought I was giving it the benefit of the doubt saying it revved at 2200 .... I thought it looked more like 2100 most of the time.


Edit: How are you comming up with a starting elevation of 8835 ft? The elevation of Silverthorn is 9035 and Dillon is about 9100 ft.