*crickets*
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Posting Guru
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From: Fairbanks, AK
They probably feel like the don't need to generate anymore interest. :P
Mountain Pass
Joined: Apr 2016
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Maybe, but only in terms of how **** poor the 6.6 will compare to the 7.3. Simple math tells us the 7.3 will crush the 6.6
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Fleet Mechanic
Joined: Jul 2004
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Maybe, but simple math is rarely the whole story. That Chevy has direct injection, and the Ford engineer on the 7.3L kept going on and on about how the 7.3L runs stoichiometric all the time. Still, I expect the 7.3L to best the 6.6L at least by 10% or better. There are reports that Chevy has another gasoline V-8 coming that is over 8L too, but I expect that will be for large commercial trucks only.
Logistics Pro
Joined: Jan 2011
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From: Ohio
It all adds up to great news for truck buyers of any brand. The products keep getting better.
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HP or TQ per liter would be the way to compare. From my earlier post:
I know nothing of the differences and similarities between the 7.3 vs. the GM LS motors. But if you figure they can't be too far apart, simply apply the HP/Liter:
L96 comes out at 60 HP/L and 63.3 Torque. Applied to the 7.3 you get 438/462,
LS3 comes out at 69.2/68.5. Apply to the 7.3 for 505/500.
So mid 4s for HP, low 5s for torque. .
The new 6.6 comes out to 60.6 HP/L and 68.18 TQ/L. As a 7.3 you get 442/498.
I like the LS3 numbers better.....
We shall see.
I know nothing of the differences and similarities between the 7.3 vs. the GM LS motors. But if you figure they can't be too far apart, simply apply the HP/Liter:
L96 comes out at 60 HP/L and 63.3 Torque. Applied to the 7.3 you get 438/462,
LS3 comes out at 69.2/68.5. Apply to the 7.3 for 505/500.
So mid 4s for HP, low 5s for torque. .
The new 6.6 comes out to 60.6 HP/L and 68.18 TQ/L. As a 7.3 you get 442/498.
I like the LS3 numbers better.....
We shall see.
Fleet Mechanic
Joined: Jul 2004
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If you watch and listen carefully to the TFL interview of the 7.3L engineer, that guy states that they had a specific output for the 7.3L in mind. Their plan to run the engine at stoichiometric air/fuel ratio at all times for maximum efficiency dictated the 7.3L displacement. Interesting approach.
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From: Isanti, MN
If you watch and listen carefully to the TFL interview of the 7.3L engineer, that guy states that they had a specific output for the 7.3L in mind. Their plan to run the engine at stoichiometric air/fuel ratio at all times for maximum efficiency dictated the 7.3L displacement. Interesting approach.
I would have imagined engine displacements for the last 50 years have been designed like that.
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Is it really? Modern fuel injected engines have been running at stoichiometric ratio the overwhelming majority of the time for decades now. Most calibrations only rich in the mixture at or close to WOT.
I would have imagined engine displacements for the last 50 years have been designed like that.
I would have imagined engine displacements for the last 50 years have been designed like that.
Fleet Mechanic
Joined: Jul 2004
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Is it really? Modern fuel injected engines have been running at stoichiometric ratio the overwhelming majority of the time for decades now. Most calibrations only rich in the mixture at or close to WOT.
I would have imagined engine displacements for the last 50 years have been designed like that.
I would have imagined engine displacements for the last 50 years have been designed like that.
Cargo Master
Joined: Apr 2010
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From: Seattle area
The whole “designed for stoichiometric ratio” stuff has me confused/curious too. I’m not an engine guy, but it sure seems like this is what all gas engines have to do so they not running lean or rich. Wikipedia isn’t much help either.
Maybe Ford’s engineers conceived the design by thinking about it differently. Just speculating here, but instead of saying they want “x power from a 7.3ltr block” and then designing the injectors and intake, they said “what size engine would be perfect for these injectors and intake?”
Or maybe the engineers found the current gas motors were having to work too hard (rich) in their average environment, so they designed the motor to be most efficient in that region. That would suggest this new motor could be less efficient at certain RPMs than the current platforms, but maybe that doesn’t matter.
Man, this just makes me even more curious about the motor...
Maybe Ford’s engineers conceived the design by thinking about it differently. Just speculating here, but instead of saying they want “x power from a 7.3ltr block” and then designing the injectors and intake, they said “what size engine would be perfect for these injectors and intake?”
Or maybe the engineers found the current gas motors were having to work too hard (rich) in their average environment, so they designed the motor to be most efficient in that region. That would suggest this new motor could be less efficient at certain RPMs than the current platforms, but maybe that doesn’t matter.
Man, this just makes me even more curious about the motor...
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Or maybe the engineers found the current gas motors were having to work too hard (rich) in their average environment, so they designed the motor to be most efficient in that region. That would suggest this new motor could be less efficient at certain RPMs than the current platforms, but maybe that doesn’t matter.
Initial orders go in August, and we're 2 weeks away from May, so we'll have 3 months to wait for more news... sheesh