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373 gears

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Old Jan 29, 2012 | 03:17 PM
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Default 373 gears
I have a 2006 Ford F150 4x4 crew cab with a 5.4L & 373 gears. It goes about 3000 rpm at 70 mph. It seems like it's missing a gear although it's shifting four times. Is this about right?
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Old Jan 29, 2012 | 03:21 PM
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I turn just a tad under 2K when doing 70 on a flat service or even up hill... did you buy it used... maybe it's been regeared... or what size tires you running....
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Old Jan 29, 2012 | 03:41 PM
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Default 373 gears
I bought it used and it has 275 65 R18 tires and I am not sure if its been changed to a different gear ratio.
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Old Jan 29, 2012 | 03:48 PM
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I have 35s with 3.73 gears and can hold 70 up a moderate hill under 2k. Do you have overdrive off?
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Old Jan 29, 2012 | 03:50 PM
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I have a 4.6 screw with 3.73 and it does 2000 RPM at 70
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Old Jan 29, 2012 | 03:55 PM
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No, overdrive is not off. I think I feel the converter lockup & think it's overdrive.
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Old Jan 29, 2012 | 04:01 PM
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I'm probably wrong, but wouldn't it throw a code if the trans was missing a gear?
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Old Jan 29, 2012 | 04:08 PM
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You're probably right but it's not giving me any codes.
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Old Jan 29, 2012 | 04:24 PM
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Do you have an overdrive off switch or a tow/haul switch?
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Old Jan 29, 2012 | 04:27 PM
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Yes I have an overdrive switch & it's on.
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