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Old 09-15-2015, 03:00 PM
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Dana 60 or 44

Ok guys, so I am eventually going to replace my rear axle. I don't want to build one and I don't mind spending the money on a new one. I just want to know what you guys had to do to replace your D35 with either. I dont mind spending the money on a G2 rockjock 60, my problem is I know the pinion is going to be larger. I know i'm going to have to shorten my shaft or buy a new one. But I read somewhere that someone had to install a tummy tuck when they had to install their D60. Why? I am slightly worried about my clearance under the pumpkin of the d60 with 33's. I want to eventually run 35's but my 33's have a lot of life left. Does anyone know how much clearance these rockjocks have under the center? So now I am thinking a d44 with 35 spline shafts. Please dont tell me that its going to be hard to find replacement parts because I know. But what would you have to do to go from a d35 to a d44. Just replace the u-joint with a conversion u-joint?.

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Old 09-15-2015, 03:55 PM   #2
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If your going to 35s then i would say d44. But i dont have any experience with either so. Just my opinion

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Old 09-15-2015, 04:16 PM   #3
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I would do a Ford 8.8.
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Old 09-15-2015, 04:37 PM   #4
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A Dana 60 would be overkill for anything under 39" tires. From a price perspective, and with a goal of running no more than 35's, an 8.8 would be reasonable. If 37's are in your future, consider a heavy duty built Dana 44, or even a ford 9" with the big bearings. Problems with a 60 for your application include ground clearance, clearance for the factory gas tank on up travel, the cost of narrowing any where near stock, and of course weight.
I run 60's with 40" tires and catch more rocks on my diffs than I can count.
Now, if your going to run a v8, and plan on getting on it real heavy, than I change my suggestion.
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Old 09-15-2015, 05:10 PM
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Originally Posted by Flmudpup View Post
A Dana 60 would be overkill for anything under 39" tires. From a price perspective, and with a goal of running no more than 35's, an 8.8 would be reasonable. If 37's are in your future, consider a heavy duty built Dana 44, or even a ford 9" with the big bearings. Problems with a 60 for your application include ground clearance, clearance for the factory gas tank on up travel, the cost of narrowing any where near stock, and of course weight.
I run 60's with 40" tires and catch more rocks on my diffs than I can count.
Now, if your going to run a v8, and plan on getting on it real heavy, than I change my suggestion.
Well I would like to go up to 37's somewhere in the future but I really dont see that being forseable. Like i said, Id rather run a rockjock if i can because some clearance issues are taken care of but Im not too aware of them. You said fuel tank with the uptravel, what would the solution to that be. Is there some aftermarket fuel tank that could take care of that or would you need an auxiliary fuel cell? I was also considering getting a currie rockjock 44 which is just a beefed up 44 and build it myself.
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Old 09-15-2015, 10:00 PM   #6
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I would stick with well built d44's and leave the d60's for the guys running 38+ inch tires with built V8 motors.
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Old 09-16-2015, 02:29 AM   #7
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Rockjock 60 is perfectly fine with 35s. The rear is a high pinion design and is angled to have higher clearance at the bottom. It also has a replaceable skid that runs along the bottom. I have wheeled with a guy on this forum who runs 35s while running a rockjock 60 in the rear and he has had no clearance issues from what I saw. The advice you are hearing above this post is usually advice given for junkyard D60s which don't have the built in clearance. Also the currie rockjock isn't that heavy compared to a full sized truck 60. Id say go for it. If you plan on going bigger in the future, you will regret putting all your money into a 44.
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Old 09-16-2015, 06:18 AM
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Originally Posted by tkfx View Post
Rockjock 60 is perfectly fine with 35s. The rear is a high pinion design and is angled to have higher clearance at the bottom. It also has a replaceable skid that runs along the bottom. I have wheeled with a guy on this forum who runs 35s while running a rockjock 60 in the rear and he has had no clearance issues from what I saw. The advice you are hearing above this post is usually advice given for junkyard D60s which don't have the built in clearance. Also the currie rockjock isn't that heavy compared to a full sized truck 60. Id say go for it. If you plan on going bigger in the future, you will regret putting all your money into a 44.
Besides the drive shaft, what else did he have to do to get his suspension to cycle?
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Old 09-16-2015, 01:46 PM   #9
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Originally Posted by coltonjohngray View Post
Besides the drive shaft, what else did he have to do to get his suspension to cycle?
Im not sure on his build details. I believe it was built by Savvy when he bought it. The clearance issues I was referring to was about the ground clearance to the center section. As for clearance issues with the gas tank, you can always do what others have done, which is notch your gas tank skid and if you want to go further, you can heat up your gas tank and mold a bulge into it. Here is an example of the first:

Rock Jock 60 hits gas tank - Page 3 - JeepForum.com
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Old 09-16-2015, 01:57 PM
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Originally Posted by tkfx View Post
Im not sure on his build details. I believe it was built by Savvy when he bought it. The clearance issues I was referring to was about the ground clearance to the center section. As for clearance issues with the gas tank, you can always do what others have done, which is notch your gas tank skid and if you want to go further, you can heat up your gas tank and mold a bulge into it. Here is an example of the first:

Rock Jock 60 hits gas tank - Page 3 - JeepForum.com
That is a great forum. Thanks for sharing. It actually clears up a lot of issues I was thinking I might get.

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