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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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Old Sat, September 15th, 2012, 06:10 PM
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Longshot270 Longshot270 is offline
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I know a few people who launch in 4wd and say it improves their times...but they are running transmissions built for the abuse.
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Old Sun, September 16th, 2012, 11:09 PM
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I have heard that they are better times, but only if you lose traction off the line. The bad thing is you probably shouldn't go that fast with the front wheels engaged. Most shouldn't be engaged about 50mph or so, check out the owners manual to be sure, I forgot what the exact number is for your truck.
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