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DRIVESHAFTS
Driveshaft Identification
From 1966-70, the Bronco came with a Borg Warner driveshaft, from 71-77 they used a Spicer. Both of these styles used constant velocity joints. If you're not sure, don't go by the year because many of the old ones have been upgraded already. An easy way to tell which one you have is to see if your driveshaft uses external snap rings (Spicer). If you can see the snap rings on the outside of the bearing cap, it's a Spicer.
Another way to tell the difference is to measure the bolt pattern on the transfer case yoke. All of our driveshafts are Spicer style and you will need a transfer case yoke if you are converting from the old Borg Warner.
Driveshaft Measurements
Wild Horses has driveshafts to fit your specific Bronco. The fact is, that while a stock length driveshaft will still work on Broncos with small amounts of lift, it is not ideal because even with a small lift, the driveshaft is not long enough for a proper fit. We keep driveshafts in stock that will fit from stock to 6" suspensions. We would prefer to use the working measurement to ensure you get the right driveshaft. [This is the measurement from the yoke on the transfer case to the yoke on the rear end center of bearing cap to center of bearing cap with the suspension loaded normally.]
Note: The working measurement is not the measurements of the driveshaft itself, but of the distance between the mounting yokes. The working measurement is measured with the Bronco sitting on level ground and loaded as normal. The rear usually measures 33 1/2-36" and the front 23-25". If your measurement falls between one of our sizes, We generally recommend you order the next larger size (e.g. Your measurement is 34" so you would order a 34 1/2" rather than a 33 1/2").
Driveshaft Maintenance
• A lack of maintenance is the number one cause of driveshaft failure. Driveshafts should be greased regularly, including the constant velocity joint and splines.
• A rebuild kit will not fix a driveshaft that has worn-out splines and slip yoke.
Click here for a printable version
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Extreme Duty Driveshaft Front
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Item #: 8578
These are our premium driveshafts. We use D.O.M. tubing and full length splines. This provides far more spline surface contact which makes the driveshaft last longer. These work better with our long travel suspensions because the driveshaft is able to travel in and out of the slip yoke farther. The tubing is smaller in diameter and has a thicker wall. This gives added clearance when you are in the rocks. They come assembled with U-joints and constant velocity joint. They are balanced and ready to install. Please provide working measurement for best fit.
Please refer to the measurement instructions and other considerations on the Driveshaft Category page .
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Prices start at: $295.00
Various Options Available
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Extreme Duty Driveshaft Rear
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Item #: 8581
These are our premium driveshafts. We use D.O.M. tubing and full length splines. This provides far more spline surface contact which makes the driveshaft last longer. These work better with our long travel suspensions because the driveshaft is able to travel in and out of the slip yoke farther. The tubing is smaller in diameter and has a thicker wall. This gives added clearance when you are in the rocks. They come assembled with U-joints and constant velocity joint. They are balanced and ready to install. Please provide working measurement for best fit.
Please refer to the measurement instructions and other considerations on the Driveshaft Category page .
Other Shopping Features
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Prices start at: $295.00
Various Options Available
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Super-Flex U-Joint for front driveshafts
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Item #: 8595
The unique design of off-set trunnions sets the mating yokes further apart than a conventional joint. This allows for 10 degrees more flexibility than would be otherwise obtainable.
The Super-Flex universal joint was not designed to be a cure all, but rather specifically to solve a binding problem that one may incur under situations such as front axle droop.
The Super-Flex joint does cause some vibration problems. This is due to the introduction of the 3rd plane of operation, which will cause the drive shaft to run eccentric. The amount of eccentricity is a function of how steep the drive shaft runs to begin with.
In our opinion the Super-Flex joint is best suited for slower speed traditional rock crawling and for the front drive shaft only. Keep in mind front driveshaft binding is normally not an issue until you go over 3.5" of suspension lift, and then it depends on the travel capabilities of the
suspension that you are using.
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