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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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#6
Sat, December 5th, 2009, 01:13 AM
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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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