Engine power increase?
Fleet Mechanic
Joined: Jul 2004
Posts: 1,516
Likes: 198
There's much more of a loss than just parasitic drag. These engines are 'torque managed' to keep from blowing the drivelines up. You rarely get anything close the figures quoted. All the manufacturers do this, and I think it's total B.S..
Prolocutor
Joined: Jan 2009
Posts: 13,618
Likes: 1,247
From: Western MA
While this is true, it doesn't paint a complete picture. Having a nanny on a 800 ft/lb motor is < having a nanny on a 1000 ft/lb motor. So, while we may not be getting the full load at all times we are getting more than the last two generations of the 6.7 and that's what folks are excited about.
Hotshot
Joined: Apr 2013
Posts: 10,125
Likes: 660
From: NH
Why bother to engineer a massively powerful diesel engine if the transmission cannot handle it? Wouldn't it seem smart to upgrade the transmission to match?
The current 6.7L diesel supposedly puts down 860lb-ft @ 1600RPM. Why is it so hard to turn the tires by flooring the truck, then, even with traction control off? There is hardly any weight over those rear tires. Yet with our F-150, either the current 2.7L or the old 5.0L, you can effortlessly light up the rears with traction off! I would think 860lb-ft would utterly shred the tires!
Instead, you "feel" the torque surge in higher gears when already moving.
Whatever. Even though I had many reservations and second thoughts, I'm switching back to the gas truck...although even that is power-limited until a certain RPM is reached.
I have a buddy who drives a 2009 Duramax. That Allison must be one tough tranny because his truck is running a DPF and EGR delete, larger turbo, straight pipe 6" diameter, injector upgrade, and a performance tuner. He drives it hard; he lights up his rear tires almost every time he takes off, and that truck just sounds evil. The trans has not been modified and it seems to be holding up fine.
I'm not advocating driving like that, but once in awhile...
The current 6.7L diesel supposedly puts down 860lb-ft @ 1600RPM. Why is it so hard to turn the tires by flooring the truck, then, even with traction control off? There is hardly any weight over those rear tires. Yet with our F-150, either the current 2.7L or the old 5.0L, you can effortlessly light up the rears with traction off! I would think 860lb-ft would utterly shred the tires!
Instead, you "feel" the torque surge in higher gears when already moving.
Whatever. Even though I had many reservations and second thoughts, I'm switching back to the gas truck...although even that is power-limited until a certain RPM is reached.
I have a buddy who drives a 2009 Duramax. That Allison must be one tough tranny because his truck is running a DPF and EGR delete, larger turbo, straight pipe 6" diameter, injector upgrade, and a performance tuner. He drives it hard; he lights up his rear tires almost every time he takes off, and that truck just sounds evil. The trans has not been modified and it seems to be holding up fine.
I'm not advocating driving like that, but once in awhile...
Posting Guru
Joined: Dec 2011
Posts: 1,247
Likes: 3
From: monroe ct
I have a buddy who drives a 2009 Duramax. That Allison must be one tough tranny because his truck is running a DPF and EGR delete, larger turbo, straight pipe 6" diameter, injector upgrade, and a performance tuner. He drives it hard; he lights up his rear tires almost every time he takes off, and that truck just sounds evil. The trans has not been modified and it seems to be holding up fine.
Elder User
Joined: Apr 2016
Posts: 812
Likes: 4
Why bother to engineer a massively powerful diesel engine if the transmission cannot handle it? Wouldn't it seem smart to upgrade the transmission to match?
The current 6.7L diesel supposedly puts down 860lb-ft @ 1600RPM. Why is it so hard to turn the tires by flooring the truck, then, even with traction control off? There is hardly any weight over those rear tires. Yet with our F-150, either the current 2.7L or the old 5.0L, you can effortlessly light up the rears with traction off! I would think 860lb-ft would utterly shred the tires!
Instead, you "feel" the torque surge in higher gears when already moving.
Whatever. Even though I had many reservations and second thoughts, I'm switching back to the gas truck...although even that is power-limited until a certain RPM is reached.
I have a buddy who drives a 2009 Duramax. That Allison must be one tough tranny because his truck is running a DPF and EGR delete, larger turbo, straight pipe 6" diameter, injector upgrade, and a performance tuner. He drives it hard; he lights up his rear tires almost every time he takes off, and that truck just sounds evil. The trans has not been modified and it seems to be holding up fine.
I'm not advocating driving like that, but once in awhile...
The current 6.7L diesel supposedly puts down 860lb-ft @ 1600RPM. Why is it so hard to turn the tires by flooring the truck, then, even with traction control off? There is hardly any weight over those rear tires. Yet with our F-150, either the current 2.7L or the old 5.0L, you can effortlessly light up the rears with traction off! I would think 860lb-ft would utterly shred the tires!
Instead, you "feel" the torque surge in higher gears when already moving.
Whatever. Even though I had many reservations and second thoughts, I'm switching back to the gas truck...although even that is power-limited until a certain RPM is reached.
I have a buddy who drives a 2009 Duramax. That Allison must be one tough tranny because his truck is running a DPF and EGR delete, larger turbo, straight pipe 6" diameter, injector upgrade, and a performance tuner. He drives it hard; he lights up his rear tires almost every time he takes off, and that truck just sounds evil. The trans has not been modified and it seems to be holding up fine.
I'm not advocating driving like that, but once in awhile...
I'm curious how many miles a year you put on a truck troverman. The list in your signature shows 4 trucks over a 6 year span? What's the story there?
Hotshot
Joined: Apr 2013
Posts: 10,125
Likes: 660
From: NH
I outgrew my "burn the tires" phase many years ago. Dudes who do all that to their truck and burn up high dollar tires are compensating for insecurities.
I'm curious how many miles a year you put on a truck troverman. The list in your signature shows 4 trucks over a 6 year span? What's the story there?
I'm curious how many miles a year you put on a truck troverman. The list in your signature shows 4 trucks over a 6 year span? What's the story there?
The trucks usually have about 25k when I trade. The truck I have ordered will be the last for at least 5 years. Money will not be as free flowing next year. I have been fortunate to have the other trucks.
Elder User
Joined: Apr 2016
Posts: 812
Likes: 4
I peel out once in awhile, just because I feel like it. But not often.
The trucks usually have about 25k when I trade. The truck I have ordered will be the last for at least 5 years. Money will not be as free flowing next year. I have been fortunate to have the other trucks.
The trucks usually have about 25k when I trade. The truck I have ordered will be the last for at least 5 years. Money will not be as free flowing next year. I have been fortunate to have the other trucks.
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Junior User
Joined: Jan 2016
Posts: 77
Likes: 0
Why bother to engineer a massively powerful diesel engine if the transmission cannot handle it? Wouldn't it seem smart to upgrade the transmission to match?
The current 6.7L diesel supposedly puts down 860lb-ft @ 1600RPM. Why is it so hard to turn the tires by flooring the truck, then, even with traction control off? There is hardly any weight over those rear tires. Yet with our F-150, either the current 2.7L or the old 5.0L, you can effortlessly light up the rears with traction off! I would think 860lb-ft would utterly shred the tires!
Instead, you "feel" the torque surge in higher gears when already moving.
Whatever. Even though I had many reservations and second thoughts, I'm switching back to the gas truck...although even that is power-limited until a certain RPM is reached.
I have a buddy who drives a 2009 Duramax. That Allison must be one tough tranny because his truck is running a DPF and EGR delete, larger turbo, straight pipe 6" diameter, injector upgrade, and a performance tuner. He drives it hard; he lights up his rear tires almost every time he takes off, and that truck just sounds evil. The trans has not been modified and it seems to be holding up fine.
I'm not advocating driving like that, but once in awhile...
The current 6.7L diesel supposedly puts down 860lb-ft @ 1600RPM. Why is it so hard to turn the tires by flooring the truck, then, even with traction control off? There is hardly any weight over those rear tires. Yet with our F-150, either the current 2.7L or the old 5.0L, you can effortlessly light up the rears with traction off! I would think 860lb-ft would utterly shred the tires!
Instead, you "feel" the torque surge in higher gears when already moving.
Whatever. Even though I had many reservations and second thoughts, I'm switching back to the gas truck...although even that is power-limited until a certain RPM is reached.
I have a buddy who drives a 2009 Duramax. That Allison must be one tough tranny because his truck is running a DPF and EGR delete, larger turbo, straight pipe 6" diameter, injector upgrade, and a performance tuner. He drives it hard; he lights up his rear tires almost every time he takes off, and that truck just sounds evil. The trans has not been modified and it seems to be holding up fine.
I'm not advocating driving like that, but once in awhile...
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