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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Torque and RPM
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<blockquote data-quote="BurnOut" data-source="post: 1066603" data-attributes="member: 21501"><p>Based on the graph, it looks like the new motor comes on pretty quickly... looks like 2100 or so where it crosses the torque line for the '14 6.2L. Obviously, these results are at WOT (for both motors), so the new setup <em>might</em> be a little soggier (compared to the old truck) at initial tip-in and under low throttle/low engine speed cruising conditions.</p><p></p><p>Then again, there's the lighter weight and additional gears in the transmission that may well help keep the motor where it needs to be in order to deliver the torque... torque converter stall speed could also be adjusted to allow for a 2100+ RPM "flash" stall, but that wouldn't help with the low throttle/low engine speed scenario described above (it might make it worse, in fact).</p><p></p><p>Really, based on the graph, I would expect almost any work/towing/"enthusiast" use to favor the new truck vs. the old. Under those circumstances, you're typically looking at 2k+ RPM and heavier throttle use that would get the 3.5 up into the meaty part of the torque band pretty quickly. I can only think of a couple of scenarios where the lower torque between idle and 2100 would be a detriment for the new truck... things like pulling fence posts out of the ground, where the ideal approach is to chain the post to the truck, then let off the brake and let the idle torque of the truck do the work... maybe with just a breath of throttle. The work around for the one-off scenarios like that, though, is to put the (new) truck in 4-low for the torque multiplication; it's a step that might not have been necessary with the old truck, but we really are talking about an EXTREMELY low percentage use case (for the vast majority of users), here. In fact, the more that I think about it, the more I think that with the new truck there might be more call to use 4-low than with the old truck, but I can't fathom how, for most users, that would be a problem.</p></blockquote><p></p>
[QUOTE="BurnOut, post: 1066603, member: 21501"] Based on the graph, it looks like the new motor comes on pretty quickly... looks like 2100 or so where it crosses the torque line for the '14 6.2L. Obviously, these results are at WOT (for both motors), so the new setup [I]might[/I] be a little soggier (compared to the old truck) at initial tip-in and under low throttle/low engine speed cruising conditions. Then again, there's the lighter weight and additional gears in the transmission that may well help keep the motor where it needs to be in order to deliver the torque... torque converter stall speed could also be adjusted to allow for a 2100+ RPM "flash" stall, but that wouldn't help with the low throttle/low engine speed scenario described above (it might make it worse, in fact). Really, based on the graph, I would expect almost any work/towing/"enthusiast" use to favor the new truck vs. the old. Under those circumstances, you're typically looking at 2k+ RPM and heavier throttle use that would get the 3.5 up into the meaty part of the torque band pretty quickly. I can only think of a couple of scenarios where the lower torque between idle and 2100 would be a detriment for the new truck... things like pulling fence posts out of the ground, where the ideal approach is to chain the post to the truck, then let off the brake and let the idle torque of the truck do the work... maybe with just a breath of throttle. The work around for the one-off scenarios like that, though, is to put the (new) truck in 4-low for the torque multiplication; it's a step that might not have been necessary with the old truck, but we really are talking about an EXTREMELY low percentage use case (for the vast majority of users), here. In fact, the more that I think about it, the more I think that with the new truck there might be more call to use 4-low than with the old truck, but I can't fathom how, for most users, that would be a problem. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Torque and RPM
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