2.7 Ecoboost - Best in class torque?
05-08-2016, 04:31 PM
#11
Senior Member
Thread Starter
I know, I'm beginning to not trust dyno's. If the 6.2 were overrated that much, couldn't there be a lawsuit filed by 6.2 owners?
I recieved a letter one time, several years after buying a zero turn lawn mower. Apparently, other owners had filed a class action lawsuit because the manufacturer claimed 22 hp, and the engine made a couple of hp less. Whatever. It still cuts the grass ok lol.
My point is, I can't see manufacturers (GM) claiming wild hp or tq numbers and not delivering. Unless there's that much driveline loss...but that seems excessive.
I recieved a letter one time, several years after buying a zero turn lawn mower. Apparently, other owners had filed a class action lawsuit because the manufacturer claimed 22 hp, and the engine made a couple of hp less. Whatever. It still cuts the grass ok lol.
My point is, I can't see manufacturers (GM) claiming wild hp or tq numbers and not delivering. Unless there's that much driveline loss...but that seems excessive.
Turns out GM only offers a 3.23 rear axle with the 6.2L engine... A pretty inefficient way to get better MPG and deceptive for customers that want torque at the wheels.
The 2.7 EB was probably tested with the 3.73 gears.
05-08-2016, 09:55 PM
#12
Senior Member
I believe manufactures rate engines straight from the crankshaft.
Turns out GM only offers a 3.23 rear axle with the 6.2L engine... A pretty inefficient way to get better MPG and deceptive for customers that want torque at the wheels.
The 2.7 EB was probably tested with the 3.73 gears.
Turns out GM only offers a 3.23 rear axle with the 6.2L engine... A pretty inefficient way to get better MPG and deceptive for customers that want torque at the wheels.
The 2.7 EB was probably tested with the 3.73 gears.
05-09-2016, 01:07 AM
#14
Member
The difference is due to the parasitic losses in the transmission, transfer case, rear differential, etc, etc.
The base rear end for the 6.2L's and the 8 speed is the 3.23, but GM does offer a 3.4 rear end as an option with the tow package.
05-09-2016, 01:43 AM
#15
Just curious why they show the 5.3 twice but the numbers are different on the 2 tests?
05-09-2016, 02:22 AM
#16
Makes you wander if the following is happening.
1.The Eco Boost 2.7L Torque is under rated?
2.The GM's and Rams Torque and Horsepower is over rated?
3.GM and Rams 8 speed automatic is sucking up more horsepower and torque then Fords 6 speed automatic?
1.The Eco Boost 2.7L Torque is under rated?
2.The GM's and Rams Torque and Horsepower is over rated?
3.GM and Rams 8 speed automatic is sucking up more horsepower and torque then Fords 6 speed automatic?
05-09-2016, 02:34 AM
#17
the 2.7l boost comes on really strong and really low. absolutely love that part about driving it. sure the 5.0 wails once the truck is moving, but your always working that motor hard to do so. feels like the 2.7l does it all much more relaxed.
rated power is like 120hp/l vs 104hp/l 77hp/l on the 2.7,3.5,5.0
rated power is like 120hp/l vs 104hp/l 77hp/l on the 2.7,3.5,5.0
05-09-2016, 06:23 AM
#18
Senior Member
the 2.7l boost comes on really strong and really low. absolutely love that part about driving it. sure the 5.0 wails once the truck is moving, but your always working that motor hard to do so. feels like the 2.7l does it all much more relaxed.
rated power is like 120hp/l vs 104hp/l 77hp/l on the 2.7,3.5,5.0
rated power is like 120hp/l vs 104hp/l 77hp/l on the 2.7,3.5,5.0
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WestsydeGuy (05-09-2016)
05-09-2016, 06:30 AM
#19
Senior Member
I know, I'm beginning to not trust dyno's. If the 6.2 were overrated that much, couldn't there be a lawsuit filed by 6.2 owners?
I recieved a letter one time, several years after buying a zero turn lawn mower. Apparently, other owners had filed a class action lawsuit because the manufacturer claimed 22 hp, and the engine made a couple of hp less. Whatever. It still cuts the grass ok lol.
My point is, I can't see manufacturers (GM) claiming wild hp or tq numbers and not delivering. Unless there's that much driveline loss...but that seems excessive.
I recieved a letter one time, several years after buying a zero turn lawn mower. Apparently, other owners had filed a class action lawsuit because the manufacturer claimed 22 hp, and the engine made a couple of hp less. Whatever. It still cuts the grass ok lol.
My point is, I can't see manufacturers (GM) claiming wild hp or tq numbers and not delivering. Unless there's that much driveline loss...but that seems excessive.
05-09-2016, 06:34 AM
#20
Senior Member
Incredible power can be obtained from a force inducted (turbocharged) engine depending on the amount of boost. The rule of thumb is that horsepower doubles with each 14 pounds of boost. In other words, a normally aspirated motor that puts out 150hp will put out about 300hp at 14 lbs. boost.
The big issue is durability of the engine block and internals. Modern technology can produce very tough engines. Let's hope that Ford's Ecoboost engines are still holding together after 200,000 miles without a lot of maintenance. The YouTube video "Ecoboost Torture Test" is very promising.
The big issue is durability of the engine block and internals. Modern technology can produce very tough engines. Let's hope that Ford's Ecoboost engines are still holding together after 200,000 miles without a lot of maintenance. The YouTube video "Ecoboost Torture Test" is very promising.