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

9" Axle

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Old Jul 10, 2023 | 09:04 PM
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Question 9" Axle

What are the differences if any from a 1966 & 1971 removal carrier axles , locking & non .
I need to know if they are shimmed different or use different size shims ???
I need to know all/any differences inside the differential housing Backlash set-up specifications , pinion , ring gear differences , etc...etc...etc...
 
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Old Jul 16, 2023 | 08:48 PM
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351Cleveland C4
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None

A 9" is a 9".
(There were special ones, but they were in special cars)

The only difference you need to worry about is the carrier bearing size. I think they are 2.89" and 3.02"???? (Nothing to do with the engines)

Most are the 2.89" bearing. 3.02 were some of those special ones I was talking about.
 
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Old Jul 16, 2023 | 11:41 PM
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Originally Posted by 351Cleveland C4
None

A 9" is a 9".
(There were special ones, but they were in special cars)

The only difference you need to worry about is the carrier bearing size. I think they are 2.89" and 3.02"???? (Nothing to do with the engines)

Most are the 2.89" bearing. 3.02 were some of those special ones I was talking about.
YOU R THE MAN..........
Right before I logged in I was thinking I was gonna have to ask again for HELP because no one has responded..............then I see your gracious response YES
OK , just to be sure I have a Ford service manual specifically for Ford axles . It appears to be printed in 8-66 so it may include the 1971 model ??? It list shim sizes & pre-load info .
SO all 9 inch gears & pinions , plates , etc ...etc... ( except special editions ) should use the same manual regardless if 1966 or earlier years !!!
Thanx again.......
Any advice , I am gonna try to build a removable carrier , locking differential with 3.25 ring & pinion , maybe 3.55........As I said ANY advice is more than welcome !!!!!
 
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Old Jul 17, 2023 | 12:36 PM
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351Cleveland C4
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Yep. They all setup the same way with the same shims and whatnot.

Make sure you use the proper hardware and use Oil Resistant red Loctite (formula 263?) on all of the internal bolts.
 
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