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Old 07-24-2006, 06:31 PM
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Question About 9" Ford Rearend

I'm planning on using a 9" Ford rearend for my hotrod and I will be having it narrowed but was wondering where I can order new axle shafts after having the housing narrowed. Would it be safe to have the axle shafts cut, naorrowed and splinned? I want to go with around a 350 gear ratio, is it going to matter how many splines the axle shaft has? I'm not real familiar with this area. Any help is appreciated.

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Old 07-24-2006, 07:22 PM
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Thousands of re-splined axles in use out there. Moser in indiana does them, Johns in Caspian, Mich. also does them. Axle splines have to match the center section/spider gear splines.
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Old 07-26-2006, 03:20 PM
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Some you can shorten, some you can't beacuse they're tapered near the splines. Worst case is you'll have to buy a new pair. Other vendors are Mark Williams, Currie, and Strange.

28 splines is fine for moderate use, 31 is stronger.
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Old 07-26-2006, 07:32 PM
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I race at the dirt track, but several friends of mine are drag racers. I was told you could take an axle to some machine shops and they could re-spline an axle. It has to be a 31 spline though to cut it down. The 28 splines are tapered. I used to run a 78 T-bird rear end and it was a 28 spline. Pickups are most likely to have the 31.
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Old 07-28-2006, 11:35 AM
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heres some good info on shorting axles and housings, and ford 9" rear ends. you Can't shorten 28spline axles. also you can do a search on this forum



http://www.ultrastang.com/Rearinfo.asp?Page_ID=1

http://www.ultrastang.com/Rearinfo.asp?Page_ID=2

http://www.ultrastang.com/Rearinfo.asp?Page_ID=9

http://www.kevinstang.com/Ninecase.htm

http://www.maliburacing.com/ford_9_i..._nine_inch.htm

http://www.ultrastang.com/Ultrainfo.asp?Page_ID=14



Mustangsaly

Last edited by Mustangsaly; 07-28-2006 at 12:21 PM.
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Old 07-28-2006, 11:32 PM
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good 9"

if you don't have the rear housing yet try to find one from a truck the one with the last 6-8" are the 3"tubes and use the large bearings the housing is much heavier and work great for narrowing you can respline the axle if they are straight and nit tapered but why you can get great axles the lenght,spline,and bolt pattern from so many shops,suppliers, been there they will even send you a chart to get the axle just right hope this some help
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Old 07-30-2006, 03:31 PM
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Depending on how narrow you need it might be less expensive to purchase a floated rear axle assembly. These can be had from to 53" to 62" in length from rotor to rotor and offsets in 1/2" increments. Stronger and safer too.
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