Driveshaft Options?

[Cascadia]

I was informed today that I need a new driveshaft for the rear of my unlimited. I guess it's barely hanging in there due to modified suspension and larger tires. What I'm wondering is I have noticed with Tom Woods website there are different options like "short" or "super short" or whatever else? What would be the best option? I'm going to get a SYE while I'm at it. Is a longer driveshaft stronger than a shorter one? What are benefits and drawbacks of each? Who's had good luck with what?

 

[RockMonkey]

You just need one that is the proper length. Since you've raised your suspension, you need one that is longer. You can get different joint sizes for more strength, or more potential travel, and different joint types. If an Unlimited has a slip-yoke transfer case output (I think they do, unless it's the Rubicon version), now would be a good time to upgrade to a fixed yoke, as long as you're buying a new drive shaft.

 

[Cascadia]

It is a slip yoke and I will be getting a slip yoke eliminator. There are just different options for the fixed yokes. Short, super short, extreme short, I just don't know what's better.

 

[RockMonkey]

It is a slip yoke and I will be getting a slip yoke eliminator. There are just different options for the fixed yokes. Short, super short, extreme short, I just don't know what's better.

The extremely short SYEs work to reduce extreme driveshaft angles caused by lots of lift on short wheelbase vehicles. Since your wheelbase isn't as short your driveshaft angle probably isn't crazy, and you can use pretty much any SYE. The shorter the output, the longer the driveshaft, and the lower the operating angle of the joints.