TFL Truck hill towing contest: 5.0L vs 3.5L EB
02-01-2019, 01:39 PM
#21
Senior Member
There isn’t anything like the TFL truck tests. And quite frankly the Ike Gauntlet is nothing like 99% of truck owners will ever see. Great entertainment with some reality sprinkled in. Serves for great eco vs coyote fodder
02-01-2019, 05:17 PM
#24
I stopped watching TFL Truck videos some time ago.
Those goons just regurgitate the info that the manufacturer gives them, and none of their tests are very scientific. Those two F150’s were set up totally apples to oranges. I agree with what was said earlier, Mr Truck is completely misinformed. I cringe watching him speak.
If you want to compare 5.0 to 3.5 Eco, then you have to test 2 IDENTICAL trucks where the only difference is the engine. This means they should both be 4x4 or 2wd, should have same final get ratio, and have the exact same trim options. They should have the same wheel and tire package, and be aired up to the same psi. This isn’t always possible I’m sure since you may or may not be able to get option A with engine choice Y within trim package X, but you have to at least try to match them up. These guys didn’t even attempt to do a “controlled” experiment. By experiment, I mean comparison.
Those goons just regurgitate the info that the manufacturer gives them, and none of their tests are very scientific. Those two F150’s were set up totally apples to oranges. I agree with what was said earlier, Mr Truck is completely misinformed. I cringe watching him speak.
If you want to compare 5.0 to 3.5 Eco, then you have to test 2 IDENTICAL trucks where the only difference is the engine. This means they should both be 4x4 or 2wd, should have same final get ratio, and have the exact same trim options. They should have the same wheel and tire package, and be aired up to the same psi. This isn’t always possible I’m sure since you may or may not be able to get option A with engine choice Y within trim package X, but you have to at least try to match them up. These guys didn’t even attempt to do a “controlled” experiment. By experiment, I mean comparison.
I know the EB is a beast when it pulled my trailer doing 65 up I-70, and it only had a 3.15 rear end. Strong damned motor. Now with the 10 speed and Gen 2 in my 18, it barely feels like it is working pulling the same trailer.
02-01-2019, 05:48 PM
#25
Gasp! Braking applications!?
I still haven't figured out why TFL has put so much weight on the brake applications. A quick stab at the brakes here and there doesnt mean they are going to melt and you are going to hurdle off a cliff into a ravine. I can't think of one test on any truck where they ever felt concerned or like there was an issue, including multiple tests where they have pulled 11,000+ lbs upand down the ike with an ecoboost
I'll still take a 3.5L that casually churns away at no more than 3500 RPM every time. Load up a 5Star towing tune and its like i dont even have weight behind me.
Also, the 10 speed is the great equalizer. Its not 1999 and we are not driving 4 speed autos anymore which had gear spacing to large to allow for a downshift or upshift. You can pretty much have any axle ratio you want and the 10 speed will even things out. The 5.0 was at little to no disadvantage by having the 3.15's.
Here is a gear ratio calculator I built if anyone wants to compare.
https://drive.google.com/open?id=1Eu...-CXOGL-b2rAy9c
I still haven't figured out why TFL has put so much weight on the brake applications. A quick stab at the brakes here and there doesnt mean they are going to melt and you are going to hurdle off a cliff into a ravine. I can't think of one test on any truck where they ever felt concerned or like there was an issue, including multiple tests where they have pulled 11,000+ lbs upand down the ike with an ecoboost
I'll still take a 3.5L that casually churns away at no more than 3500 RPM every time. Load up a 5Star towing tune and its like i dont even have weight behind me.
Also, the 10 speed is the great equalizer. Its not 1999 and we are not driving 4 speed autos anymore which had gear spacing to large to allow for a downshift or upshift. You can pretty much have any axle ratio you want and the 10 speed will even things out. The 5.0 was at little to no disadvantage by having the 3.15's.
Here is a gear ratio calculator I built if anyone wants to compare.
https://drive.google.com/open?id=1Eu...-CXOGL-b2rAy9c
02-05-2019, 06:28 PM
#27
Hey Mass-Hole, any way you could add 4.10's to the 10speed list? Also What does the RPM at speed mean... I noticed they were all 4k plus, is that engine rpm for a certain gear? Anyway I could use that table to makes my own comparison? I want to compare 34" tires at 65mph with the 10 speed.
The RPM @ speed is the RPM in a certain gear based on the speed and tire size. I just changed to formula so you can change the gear its looking at by changing the "Gear" input to the left, so you should be able to look at any gear, tire size and speed and compare the RPM's.
02-05-2019, 06:30 PM
#28
Turbos not up to the task for heavy work
https://www.youtube.com/watch?v=2FtNlfAbc2w
https://www.youtube.com/watch?v=2FtNlfAbc2w
The guy goes into pretty great detail on why they built the engine the way they do. Because they expect HD fleet owners to have heavy payload and/or trailers on their trucks all the time and they wanted maximum efficiency there. They specifically built the engine to operate most efficiently under heavy load.
That logic doesn't apply to half tons that run unloaded 99% of the time. By your logic a 5.0 DOHC doesnt hold up to heavy work either since they went all the way back to a pushrod, 2V, port fuel injected big block.
Last edited by mass-hole; 02-05-2019 at 06:35 PM.
The following users liked this post:
Mark Miller (02-06-2019)
02-06-2019, 02:17 AM
#30
