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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.

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  #1  
Old Sat, December 5th, 2009, 01:13 AM
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Power Hungry Power Hungry is offline
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The 5.4L shouldn't have any problem hitting 120. The trip we took in Gator's truck at Talladega had us at 122 and that was only one lap. I'm sure we could have pushed a few more MPH out of it, despite the fact that it's like pushing a brick. There wasn't anything special about the programmer. Just a run of the mill Gryphon.

As mentioned, make sure your tires are rated to exceed 100 MPH.

For more information on tire speed ratings, visit How to Read Tire Ratings
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Last edited by Power Hungry; Sat, December 5th, 2009 at 02:07 AM.
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Old Thu, December 31st, 2009, 05:22 PM
bustintheirazz bustintheirazz is offline
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I have personally seen 134 out of a 05 Supercrew King Ranch with the original Edge tune. Not at liberty to discuss where or when. But yes, 120+ is and does happen.
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Old Wed, January 20th, 2010, 03:43 PM
Evol150 Evol150 is offline
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I have touched 120 here on the autobahn with just a edge. It felt like it had more but my tires are only rated to 112 so I let off.
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Old Wed, January 20th, 2010, 06:32 PM
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Originally Posted by Evol150 View Post
I have touched 120 here on the autobahn with just a edge. It felt like it had more but my tires are only rated to 112 so I let off.
That's probably smart. Our trucks are not the most perfectly designed aerodynamic masses, and I expect the control of them gets pretty squirrelly at those speeds.

- Jack
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Old Wed, January 20th, 2010, 09:26 PM
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On paper my truck is capable of 197 mph
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Longshot's chicken scratch handwriting on the back of an old Walmart receipt and a calculator

5600(max rpm) x 92.11(tire circumference in inches) x 60(minutes in an hour)
12(inches in a foot) x 5280(feet in a mile) x 3.55(diff. gear ratio) x .7 (O/D ratio)

=197
But I'll keep the secret of how to get there to myself
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Old Wed, January 20th, 2010, 11:16 PM
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On paper my truck is capable of 197 mph

But I'll keep the secret of how to get there to myself
Well crap! Since my Gear Ratio is higher, you're going to leave me in the dust! I guess it's what I get for buying a POS truck, eh? (Please have the martinis ready when I finally get there.)

- Jack
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Old Thu, January 21st, 2010, 12:40 AM
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Originally Posted by JackandJanet View Post
Well crap! Since my Gear Ratio is higher, you're going to leave me in the dust! I guess it's what I get for buying a POS truck, eh? (Please have the martinis ready when I finally get there.)

- Jack
Ah don't worry Jack I'll be hanging right back there with you with my truck and her 3.73's.
LOL's
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