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Other Fast Ford Vehicles
F-150
My F150 made its 1st 1/4 mile passes
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<blockquote data-quote="mechanicboy" data-source="post: 14829841" data-attributes="member: 152347"><p>My 12' would pull out of 4wd when I switched it after launch. It did the same when I had a light tune on it but once I had an agressive tune it would not longer do it. Many people think it wouldn't shift out but my trap speed was always about 2mph different between switching to 2wd and leaving it in 4wd the entire time. I believe the reason it would switch is because the throttle would close between shifts providing enough vacuum to perform the shift. </p><p></p><p>Driving in 4wd in dry pavement hasn't hurt my truck. I would recommend switching to 4wd before turning when possible. On the raptors they were designed to 100mph in 4wd and I've had mine close to 120mph well over a hundred times and well above 120mph a few times with no ill effects.</p><p></p><p></p><p></p><p>Nice. You should try e85, more torque down low and up high as it's equivalent to 105 octane. </p><p></p><p>What was your 60' this time in 2wd?</p></blockquote><p></p>
[QUOTE="mechanicboy, post: 14829841, member: 152347"] My 12' would pull out of 4wd when I switched it after launch. It did the same when I had a light tune on it but once I had an agressive tune it would not longer do it. Many people think it wouldn't shift out but my trap speed was always about 2mph different between switching to 2wd and leaving it in 4wd the entire time. I believe the reason it would switch is because the throttle would close between shifts providing enough vacuum to perform the shift. Driving in 4wd in dry pavement hasn't hurt my truck. I would recommend switching to 4wd before turning when possible. On the raptors they were designed to 100mph in 4wd and I've had mine close to 120mph well over a hundred times and well above 120mph a few times with no ill effects. Nice. You should try e85, more torque down low and up high as it's equivalent to 105 octane. What was your 60' this time in 2wd? [/QUOTE]
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My F150 made its 1st 1/4 mile passes
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