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Discussion Starter · #1 ·
Has anyone here upgrade Currie Rock Jock 60 or Dynatrac ProRock 60 in the rear yet? Are there any others available yet? I seen somewhere that Mopar Dana 60 was soon to be released.

If you have upgraded, I am curious as to how you like it. Any pros/cons? What locker did you choose and why?

And anything else that you may have to say or add about them is welcome.

Thanks in advance.
 

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RockJock3

I installed the Rock Jock 3 in my JK. I did it in maybe 3 hours, I got help putting it in place but other than that it was so easy. The brackets allowed for so much more adjustment than stock. It also allowed me to remove the rear trackbar relocating bracket (my jeep has 4.5 Rubicon Express lift on it). This is a very user friendly install. I had Currie put 513's and an ARB in it.
 

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only available with 5 on 5 1/2 bolt pattern

+ brackets
+ gears
+ good locker

and still a low pinion

I would save the $$ and go for the high pinion, by the time you make all the changes to bolt in, the high pinion would be almost free!!!
I agree, you can get the currie rear for just over 3k I believe. I jsut wish the front wasn't 7 large.
 

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I installed the Rock Jock 3 in my JK. I did it in maybe 3 hours, I got help putting it in place but other than that it was so easy. The brackets allowed for so much more adjustment than stock. It also allowed me to remove the rear trackbar relocating bracket (my jeep has 4.5 Rubicon Express lift on it). This is a very user friendly install. I had Currie put 513's and an ARB in it.

Ive been looking hard at the Currie 60's.
By reading their website I didnt think that they would set up the gears and locker for You.
Thats cool that they do. Saves Me from having to bring it to a shop to have it done! :D

Mind sharing what the total cost from Currie was?

Thanks!

Matt
 

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only available with 5 on 5 1/2 bolt pattern

+ brackets
+ gears
+ good locker

and still a low pinion

I would save the $$ and go for the high pinion, by the time you make all the changes to bolt in, the high pinion would be almost free!!!
quadratec had it up yesterday, today its not there, says product not found
weird
 

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might be a dumb question but i'll ask anyways...why put a dana 60 in the rear? isn't the front axle the weaker one?
 

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The overall vehicle weight is transfered to the rear of the vehicle during shifts and acceleration. When off roading, the weight transfer and stress is even more pronounced in the rear of the vehicle....like when bumping a ledge etc...Add that the rear ring & pinion and axle shafts are under stress during 2wd even more often, and it becomes apparent why generally a larger/ stronger axle assembly is used in the rear. Also the rear is generally locked more often than the front. The majority of stress in the front axle comes from the steering and articulating factor that can contribute to axle shaft, bearing, u-joint and knuckle failure.
 

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what's the benefit to the rotation? is it functional or looks?
I'll answer this one--The Tera CRD 60 was the first "rotated cover" design, and it was made that way (with the Constant Radius Design) so you wouldn't lose clearance underneath the pumpkin when you tip the pinion up with higher lift heights, as you would with a standard D60.


You can see how the smooth bottom will maintain good ground clearance throughout a huge range of pinion angles. It's also higher clearance than a normal D60, while keeping a large oil fill volume to keep gears and bearings happy.

The Rock Jock rotated the cover even more, for whatever reason.

The big improvement as compared to a normal high-pinion 60 (including the Dynatrac) is the much larger outer pinion bearing. High pinion axles were only originally intended for a front axle application, and if they're used in a rear axle the force on the pinion bearings is reversed--it's trying to compress the small outer bearing rather than the larger inner bearing like it would in the front end. The CRD60 and the Rock Jock both use a larger outer bearing, as well as improving the oiling to that bearing so they'll be happier when used as a rear axle.

As far as I know, Tera and Currie are the only ones using different bearings. For that reason, they're the two I'd choose between for a rear axle. For a front axle, the larger outer bearing isn't as much of a concern, so Dynatrac, Solid, and others would be in consideration also.
 

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