Drivetrain Loss
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Joined: Feb 2005
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From: Raleigh NC
Drivetrain Loss
Hey Guys,
Question for Mike Troyer, Marc Carpenter or anyone else, is there anything that can be done about the 30% plus drivetrain loss in the 04s and up. Mine is a 4x4 so I know it is the worst in terms of loss...thanks in advance!
Question for Mike Troyer, Marc Carpenter or anyone else, is there anything that can be done about the 30% plus drivetrain loss in the 04s and up. Mine is a 4x4 so I know it is the worst in terms of loss...thanks in advance!
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Joined: May 2004
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From: Sunny FL
Originally Posted by Superchips_Distributor
(Snip)
Now in the new body style trucks with the 5.4 3V 300 HP engines in a 4WD configuration (run in 2WD mode) using the 4R75-E transmission (updated 4R70W, basically), we see it makes about 220 RWHP stock on the same eddy-current dyno that we did a lot of the Lightnings on, for an 80 HP driveline loss in round numbers - representing about 26.67% loss. The 5.4 3V motors, if actually allowed to turn enough rpms to hit their power peak at the rear wheels, generally make their 300 HP rating from what we've seen - they are not significantly under or over-rated, on average.
Now in the manual-tranny vehicles, the 5 & 6-speed manuals tend to lose (in round numbers) about half as much power as the automatics do - so a typical 220 HP non-PI 4.6 5-spd. 1997-1999 F-150 sees about 185 RWHP in stock trim on an ideally-running stock truck, just for example (though we've seen a number of them hit only 170-175 stock). So now we're talking about a 15.91% loss. But drop a 5.4 260 HP motor in that same truck as a number of our customers have done so that they can have a 5.4 manual-tranny F-150 (which Ford doesn't make), and the driveline loss stays close to 35 HP (it might hit 38-40 HP), which then represents a 13.46% loss.
Generally speaking, we're told that in automatics, the driveline loss is about 25%, while in manuals, it's about 15% - and in many configurations, that's about right. But in the Lightning, the driveline loss expressed in % terms is less.
Now in the new body style trucks with the 5.4 3V 300 HP engines in a 4WD configuration (run in 2WD mode) using the 4R75-E transmission (updated 4R70W, basically), we see it makes about 220 RWHP stock on the same eddy-current dyno that we did a lot of the Lightnings on, for an 80 HP driveline loss in round numbers - representing about 26.67% loss. The 5.4 3V motors, if actually allowed to turn enough rpms to hit their power peak at the rear wheels, generally make their 300 HP rating from what we've seen - they are not significantly under or over-rated, on average.
Now in the manual-tranny vehicles, the 5 & 6-speed manuals tend to lose (in round numbers) about half as much power as the automatics do - so a typical 220 HP non-PI 4.6 5-spd. 1997-1999 F-150 sees about 185 RWHP in stock trim on an ideally-running stock truck, just for example (though we've seen a number of them hit only 170-175 stock). So now we're talking about a 15.91% loss. But drop a 5.4 260 HP motor in that same truck as a number of our customers have done so that they can have a 5.4 manual-tranny F-150 (which Ford doesn't make), and the driveline loss stays close to 35 HP (it might hit 38-40 HP), which then represents a 13.46% loss.
Generally speaking, we're told that in automatics, the driveline loss is about 25%, while in manuals, it's about 15% - and in many configurations, that's about right. But in the Lightning, the driveline loss expressed in % terms is less.
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Joined: Mar 2006
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From: tampa,florida
the answer starts with a question! we all no these are solid heavy trucks thats a given! why when designing this truck wasnt more thought given to power and torque use to drivetrain loss? another way saying it, if you know you have heavy truck and you know your probably going to have 25% of your power lossed thru your drivetrain, then why in the hell wouldnt you adress the issue before building it? i love my 06,f150,4x4,cc. hands down one of the best built and good looking trucks out there today! however the reality is they, being ford, dropped the ball with engine! under powered! under torqued! and knowing that they released it anyway! shame on ford!!
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From: San Diego
Originally Posted by fla.boy
the answer starts with a question! we all no these are solid heavy trucks thats a given! why when designing this truck wasnt more thought given to power and torque use to drivetrain loss? another way saying it, if you know you have heavy truck and you know your probably going to have 25% of your power lossed thru your drivetrain, then why in the hell wouldnt you adress the issue before building it? i love my 06,f150,4x4,cc. hands down one of the best built and good looking trucks out there today! however the reality is they, being ford, dropped the ball with engine! under powered! under torqued! and knowing that they released it anyway! shame on ford!!
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From: Burleson/Athens/Brownsboro, TX
Originally Posted by Stealth
Zip it old man. Here's a pic for ya.
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Jim
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From: tampa,florida
i am very interested to see the2008 redesigned f150! should interesting! i also think we will see a lightning! i read the transcript from friday that 'mark fields gave and it looked very promising!