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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

9" gear change

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Old Aug 29, 2003 | 10:19 AM
  #1  
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kfincher
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9" gear change

I want to change the gear ratio in the rear end. Probably has 350 or 400 now. Found 300 gears for $175. The guy said if I would take out the chunk and bring to him, he would swap the gears for additional $150. Is this good? I have not taken out a chunk before, what is involved in doing this? Thanks
 
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Old Aug 29, 2003 | 12:18 PM
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MuchToMyDelight
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From: Thomson, GA
9" gear change

If you are getting the T-5 as mentioned in the previous post, why would you want 300 gears? The T-5 has an over drive.
 
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Old Oct 14, 2003 | 09:25 PM
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Found a rear axle from a 96 F140 4x4 with 275 gears? Will that fit in my 68?
 
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Old Oct 14, 2003 | 11:13 PM
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From: Parkville, MO (KC)
kfincher -- in a word, no!

Best not to post to old threads with new questions, lest you not get an answer, FYI.

Your 68 could have either a 28 or 31 spline 9" rear. Probably a 28, as the heavier duty trucks got Dana or Spicer rears. Do you know for sure what kind of rear you have? Later, Ford put 31 splines in trucks and performance cars.

I don't know what a '96 has in it -- not my era of expertise so to speak. But I am damn neared certain its not going to work for you.

later....
 
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Old Oct 15, 2003 | 04:15 AM
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I know it's a 9" rear, but am not sure about the splines. Thanks cdherman for the info.
 
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