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Old 02-28-2006, 07:38 AM
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which 9 inch Ford to use

I have two Ford 9" axles and I am trying to figure out which one to use on my 26 model T. One axle is out of a 78 Ford LTD II and I noticed the housing is tapered. The u bolts and leaf spring perches that I was going to use don't quite fit untill you get further from the pumpkin. The other axle is out of a 68 ford F-100 and the axle housing tubes are straight across. Does anyone know if the tapered one is stronger or does it have thinner walls? I have a new detroit locker and bearings to go in them and they both have 28 spline axles so that isn't a concern. Thanks for your help!

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Old 02-28-2006, 08:18 AM
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28 spline is standard the real difference I see would be the gear, meaning the truck will have the quicker ration then the passenger car, however the truck rear is fastest and gas hungry ( if that matters ) If you want a rear to burn tires and quick starts off the line the truck rear is the one. It, the truck rear, I would guess be the stronger of the two , just because of the difference in applications..............imo
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Old 02-28-2006, 10:24 AM
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Use the truck one it has bigger axle shaft bearings.
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Old 02-28-2006, 07:17 PM
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Yeah use the truck axel. Who cares about gas mileage. The ratio is probably 3.73 or 4.10. There chould be a tag on the axel somewhere that will tell you what ratio it is. It's a hot rod. Not a Toyota Prius gas saver tree hugger car!

With a Detroit locker, you'll have a very strong rear end.
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