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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

ford 9 inch question

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Old Jun 3, 2009 | 07:30 PM
  #1  
terryb4471's Avatar
terryb4471
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From: macomb twp, MI
ford 9 inch question

I have a 50 f1 with a ford 9 inch from a 57 f100. Does the driveshft center line have to be straight or can it be offset. (trans yoke to rear diff yoke)The passenger tube is shorter, plus the offset of the third member puts the center line of the driveshaft off to the passenger side. My guess it would be approx 4 inches to the passenger side. Will this cause a vibration? Is this OK or should I get a new housing. Has anyone else had this problem and what did you do?
Terry
 
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Old Jun 3, 2009 | 07:55 PM
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It's o.k. my 79 bronco and 79 150 s.cab are that way.
 
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Old Jun 3, 2009 | 08:02 PM
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So is my 52 f1. I posted the same question and others answered that it was normal for the 9" rear ends to be offset (closer to the passenger side).
 
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Old Jun 4, 2009 | 08:46 PM
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Thanks for the info. I will try it. Some say it might vibrate at high speeds.
 
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Old Jun 4, 2009 | 09:42 PM
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Others can chime in but I believe it must NOT be straight in line. I thought Ford put the offset in on purpose and Mopar did it vertically.

I know that a '60 Truck 9" is a bolt-in as is for my 49. I've done it three time with no mods and no trouble.
 
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Old Jun 4, 2009 | 10:13 PM
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TERRYB4471------I don't understand why you think there may be a problem.You say you "will try it".Ford motor co. tried it a long time ago with no problems and kept on building it. don't worry it's okay.
 
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