dana 80 vs dana 70 - Dodge Cummins Diesel Forum
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post #1 of 8 (permalink) Old 03-24-2011, 08:18 PM Thread Starter
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dana 80 vs dana 70

Anyone know the difference in the overall weight of the Dana 80 vs the Dana 70? I am looking into putting in an 80 but I don't want to increase the weight of the truck to much.


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post #2 of 8 (permalink) Old 03-24-2011, 08:24 PM
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With as heavy as these trucks are, the extra weight will be negligible. You trying to keep weight down for racing or what?

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post #3 of 8 (permalink) Old 03-24-2011, 08:31 PM
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Similar question, but with regards to strength... I currently have a Dana 70. Will it be worth the effort to find and put in a Dana 80?

At what point (weight, power/torque, etc.) will I break a Dana 70?

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post #4 of 8 (permalink) Old 03-24-2011, 08:33 PM Thread Starter
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I've made a few trips down the track. I have a choice to rebuild a trashed 70 or replace it with an 80 that has 200000 miles on it. The last trip cost me a new t case a rebuilt shaft and now a diff. I guess if you aint breakin something you aint playing hard enough!!

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post #5 of 8 (permalink) Old 03-24-2011, 08:36 PM Thread Starter
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Quote:
Originally Posted by Pele View Post
Similar question, but with regards to strength... I currently have a Dana 70. Will it be worth the effort to find and put in a Dana 80?

At what point (weight, power/torque, etc.) will I break a Dana 70?
I am pushing 2000 ftlbs and I think I wheel hopped and everything came apart. I shattered the pinion in the diff. Everyone I'm talking to is saying go with an 80 but I don't want to increase the overall weight of the truck.

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post #6 of 8 (permalink) Old 03-24-2011, 11:21 PM
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80 is much lighter than a 70, cause you got to carry spare 70 assy to get yourself home from playing.

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post #7 of 8 (permalink) Old 03-24-2011, 11:45 PM
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80 is much lighter than a 70, cause you got to carry spare 70 assy to get yourself home from playing.

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post #8 of 8 (permalink) Old 03-25-2011, 12:56 AM
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Quote:
Originally Posted by ol-blue View Post
I've made a few trips down the track. I have a choice to rebuild a trashed 70 or replace it with an 80 that has 200000 miles on it. The last trip cost me a new t case a rebuilt shaft and now a diff. I guess if you aint breakin something you aint playing hard enough!!
I wouldnt worry about the mileage on that 80. I just took mine apart to put in an ARB locker and everything looked new and mine had 212,000 miles on it.

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