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Which is fastest in quarter mile race?

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Old 10-10-2017, 07:49 AM   #1031
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Quote:
Originally Posted by Mark Miller View Post
FWIW i never defeated the traction control on the 2.7L Eco Boost truck.And had a 2.001 60ft time on a 14.53 pass and a 2.050 60 ft on a 14.56 pass.I was launching both trucks the same 4x4 hi brake boost 2,300-2,500 rpm launch.Also FWIW as you can see the 2017 was still faster even with the crap 60ft as it went a [email protected] mph.
the gen2 3.5 EB is rated at 470ft-lbs @ the crank. Considering the lightweight rear end of these trucks, the ECU is working wizardry via traction control to eliminate wheelspin....which means cutting power.

If you have 4wd, launch in 4hi and defeat all the traction control systems, then brake boost as hard as you can. You'll get a sub-2 60' time for sure.
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Old 10-10-2017, 01:22 PM   #1032
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Originally Posted by chimmike View Post
the gen2 3.5 EB is rated at 470ft-lbs @ the crank. Considering the lightweight rear end of these trucks, the ECU is working wizardry via traction control to eliminate wheelspin....which means cutting power.

If you have 4wd, launch in 4hi and defeat all the traction control systems, then brake boost as hard as you can. You'll get a sub-2 60' time for sure.
The 2.0xx 60' times seems really slow. I would expect much lower with a 4x4 boosted launch.
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Old 10-10-2017, 03:32 PM   #1033
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Ah that's a rcsb though.
Yeah thats gotta be 800-1000 lbs lighter than the crew cab truck which is a huge amount when you consider the crew cab is probably only 5000 lbs.
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Old 10-10-2017, 04:31 PM   #1034
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What are the 2.7 rcsb trucks running stock?

Btw, ford claims it's 400 lb difference between the rcsb and supercrew, same engine and drive config.
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Old 10-10-2017, 04:47 PM   #1035
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sounds about right. 400 lbs is still a large amount. You've gotta think if it was going to run a 14.0 it'll now run more like a 13.5.
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Old 10-10-2017, 06:02 PM   #1036
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I saw the VMP 2016 screw 4x4 5.0 go 11.65 at Bowling Green, KY NMRA race two weeks ago. The truck has been 11.50 @ 120mph best.
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Old 10-11-2017, 02:27 AM   #1037
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Quote:
Originally Posted by chimmike View Post
the gen2 3.5 EB is rated at 470ft-lbs @ the crank. Considering the lightweight rear end of these trucks, the ECU is working wizardry via traction control to eliminate wheelspin....which means cutting power.

If you have 4wd, launch in 4hi and defeat all the traction control systems, then brake boost as hard as you can. You'll get a sub-2 60' time for sure.
I was launching in 4wd hi 2,500 rpm,so if it wasn't spinning which is highly unlikely why would it be cutting power?Shouldn't traction control only cut power if it's actually spinning?I probably won't get to the track again this year as they will be closing soon for winter,but i'll try turning the traction control off next year and see if that helps.
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Old 10-12-2017, 01:28 PM   #1038
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Quote:
Originally Posted by Mark Miller View Post
I was launching in 4wd hi 2,500 rpm,so if it wasn't spinning which is highly unlikely why would it be cutting power?Shouldn't traction control only cut power if it's actually spinning?I probably won't get to the track again this year as they will be closing soon for winter,but i'll try turning the traction control off next year and see if that helps.
It could also be torque management by the transmission to keep things from blowing up. I assume the tuners remove this which is why the tuned 2017 in the video i posted can beat cars on drag slicks. My 2006 GTO on stock 245's could turn a 2 second 60' without much trouble and that was with a manual trans. My guess is we could run 1.5-1.6 second 60's

Last edited by mass-hole; 10-12-2017 at 01:31 PM.
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Old 10-13-2017, 12:42 AM   #1039
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Originally Posted by mass-hole View Post
It could also be torque management by the transmission to keep things from blowing up. I assume the tuners remove this which is why the tuned 2017 in the video i posted can beat cars on drag slicks. My 2006 GTO on stock 245's could turn a 2 second 60' without much trouble and that was with a manual trans. My guess is we could run 1.5-1.6 second 60's
I thought about torque management also,it should have IMO had a better 60 ft time then the 2.7L Eco Boost truck launching the same way.Unless something like torque management was cutting back torque.I'll try next year with TC off but i don't think that was the problem as i never turned it off on the 2.7L Eco Boost truck.
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Old 10-14-2017, 09:21 AM   #1040
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Originally Posted by engineermike View Post
What are the 2.7 rcsb trucks running stock?

Btw, ford claims it's 400 lb difference between the rcsb and supercrew, same engine and drive config.
Not as quick as the 18 RCSB 5.0 that's for sure!
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