Forums
New posts
Search forums
What's new
New posts
New profile posts
Latest activity
Members
Registered members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
RAM TRX - TRX-Forum.com
Bronco Raptor - BroncoRaptorForum.com
Forums
GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Torque and RPM
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="BurnOut" data-source="post: 1066688" data-attributes="member: 21501"><p>...that you don't need 300+ ft/lb to maintain cruising speed, so why burn the fuel to make power that you don't need?</p><p></p><p>The area of the power curve where there's low torque is between idle and 2100 or so... and if you're spending a significant amount of time in that part of the tach, you're not using the truck aggressively. If you ARE using the truck aggressively, you'll be out of that part of the rev range soon enough.</p><p></p><p>If you watch the TFL Truck vid of the 0-60 runs, the truck doesn't seem to have much trouble coming "on to" the motor under heavy acceleration (granted, it IS unloaded acceleration); I expect that most of the, say, 1400 RPM "dead zone" (between an assumed idle speed of 700 RPM and 2100 RPM where the HO 3.5L surpasses the torque of the 6.2L) is eaten up by the flash stall speed of the converter. Hell, I'd be willing to bet that it's damn near the same case with the existing 6.2L trucks (again, under WOT conditions). Under cruising conditions, I can see an advantage for the 6.2L trucks <em>if</em>, for some reason, you didn't want to allow the transmission to downshift. However, personally, even in V8 powered vehicles (granted, I have never driven a 1st gen Raptor), I want them to downshift when accelerating from cruising speed (say, moving from a 50 mph zone to a 75 mph zone), as there's just not enough ass below 2k RPM to give me the acceleration that I want. Add in the tighter gear spacing (and faster shifts) of the 10 speed, and if I had to guess, even accelerating from cruise speeds will favor the new truck. In regard to fuel consumption, high load/low RPM (the only place the 6.2L has an advantage) is a mileage (and engine) KILLER.</p></blockquote><p></p>
[QUOTE="BurnOut, post: 1066688, member: 21501"] ...that you don't need 300+ ft/lb to maintain cruising speed, so why burn the fuel to make power that you don't need? The area of the power curve where there's low torque is between idle and 2100 or so... and if you're spending a significant amount of time in that part of the tach, you're not using the truck aggressively. If you ARE using the truck aggressively, you'll be out of that part of the rev range soon enough. If you watch the TFL Truck vid of the 0-60 runs, the truck doesn't seem to have much trouble coming "on to" the motor under heavy acceleration (granted, it IS unloaded acceleration); I expect that most of the, say, 1400 RPM "dead zone" (between an assumed idle speed of 700 RPM and 2100 RPM where the HO 3.5L surpasses the torque of the 6.2L) is eaten up by the flash stall speed of the converter. Hell, I'd be willing to bet that it's damn near the same case with the existing 6.2L trucks (again, under WOT conditions). Under cruising conditions, I can see an advantage for the 6.2L trucks [I]if[/I], for some reason, you didn't want to allow the transmission to downshift. However, personally, even in V8 powered vehicles (granted, I have never driven a 1st gen Raptor), I want them to downshift when accelerating from cruising speed (say, moving from a 50 mph zone to a 75 mph zone), as there's just not enough ass below 2k RPM to give me the acceleration that I want. Add in the tighter gear spacing (and faster shifts) of the 10 speed, and if I had to guess, even accelerating from cruise speeds will favor the new truck. In regard to fuel consumption, high load/low RPM (the only place the 6.2L has an advantage) is a mileage (and engine) KILLER. [/QUOTE]
Insert quotes…
Verification
Post reply
Members online
Wristdoc
Butterz
jm77
Telecaster480
RockHillRaptor
Space Ghost
bellnghmrider
Whoops
RobSpring661
nelsonr103
Braaaaptor
icecoldak
james9
BBQness
sf2360
David333
Stonehide
RNA352
KMO
jgsmithsae
shigman
3Dog
mobin
pattmarsons
Hard R
Titan_Uranus
JD05
GreenGoblin
downforce137
elpechedepeche
Ruger
jak405817
Justbob
Raptor Rob
wyomingraptor
Forum statistics
Threads
93,190
Posts
1,955,683
Members
56,469
Latest member
ngodavid23
Forums
GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Torque and RPM
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top