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  #1  
Old 02-18-2013, 10:12 AM
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crzybil87 crzybil87 is offline
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shackle reversal questions????

I'm planning on doing a shackle reversal on my 89 f350 , I'm redoing my front suspension on my truck I've got parts from various company's , however. How do I figure out what length shackle do I need ? Thats the only thing I seem to not be able to find is how long I need them. Any help would be awesome
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  #2  
Old 02-18-2013, 11:32 AM
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Well Crazybil, a lot of the geometry is going to change when you flip the shackle. If the standard shackle is 4", for instance, when you flip the shackle, it will raise the truck almost 8". The problem becomes the distance your driveshaft can reach, and you will likely have to move around your shackle hanger and spring hanger on your frame. This might also be enough to move the axle toward the center of the vehicle.

These are just things to think about before you commit to flipping the shackle.

Ryan
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Old 02-18-2013, 06:39 PM
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My understanding is that the stock shackle is commonly reused. The length of the driveshaft isn't really so much of an issue as the angle it has from the t-case to the axle.
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Old 02-18-2013, 07:27 PM
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I think you guys think I mean a shackle flip. On the front suspension I'm planning on moving the shackle from the front of the leaf springs to the rear, like how chevys are set up with the shackle in the rear of the leaf springs
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Old 02-18-2013, 07:48 PM
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Hadn't heard of doing that. I have heard of replacing the springs with normal style springs so that they arch downward. Not sure how well that will work with the TTB axle.
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My trucks:
The workhorse, 86 F250 4x4 6.9 nat aspirated, 3.25 exhaust, custom intake, electric fuel pump, otherwise well used stock... not real pretty but just loves to work!

The other heavy hauler, 92 F350 2wd dually crew cab, flatbed/toolboxes, 92 Cummins VE 12V with intercooler, NV4500 manual

The beater: 88 F250 4x4, 5.8 5 speed
The project ... 1978 F150 4wd shortbed 351 auto

ASE certified parts specialist
I do most all of my own work so I know who to complain to..Roger
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Old 02-18-2013, 08:47 PM
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I have a Dana 60 up front, I don't like the shackle being up front
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Old 02-18-2013, 10:03 PM
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With D60, you do want it in the back. On the TTb axles, the spring works like a radius arm. On a straight, the front hanger locates the axle. Unless you are lifting it more, I would suggest finding a shackle from an F350.
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My trucks:
The workhorse, 86 F250 4x4 6.9 nat aspirated, 3.25 exhaust, custom intake, electric fuel pump, otherwise well used stock... not real pretty but just loves to work!

The other heavy hauler, 92 F350 2wd dually crew cab, flatbed/toolboxes, 92 Cummins VE 12V with intercooler, NV4500 manual

The beater: 88 F250 4x4, 5.8 5 speed
The project ... 1978 F150 4wd shortbed 351 auto

ASE certified parts specialist
I do most all of my own work so I know who to complain to..Roger
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  #8  
Old 02-18-2013, 10:19 PM
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crzybil87 crzybil87 is offline
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Mine is a 350 do you mean find rear shackles to use for the rear shackle on the front spring?
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dump truck springs for a lift
6" of lift
under construction
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  #9  
Old 02-19-2013, 05:20 AM
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I'm too used to 250's. I would have to defer this particular subject to someone that knows better than I do. Only 350 we have is a 2wd.
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My trucks:
The workhorse, 86 F250 4x4 6.9 nat aspirated, 3.25 exhaust, custom intake, electric fuel pump, otherwise well used stock... not real pretty but just loves to work!

The other heavy hauler, 92 F350 2wd dually crew cab, flatbed/toolboxes, 92 Cummins VE 12V with intercooler, NV4500 manual

The beater: 88 F250 4x4, 5.8 5 speed
The project ... 1978 F150 4wd shortbed 351 auto

ASE certified parts specialist
I do most all of my own work so I know who to complain to..Roger
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  #10  
Old 02-19-2013, 05:46 PM
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crzybil87 crzybil87 is offline
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Haha at least your honest
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89' F450
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dump truck springs for a lift
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under construction
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