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who has broke a D70?

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Old 01-20-2008, 05:18 PM
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who has broke a D70?
Trying to decide between a D80 swap or rebuild my D70. Looking to find out how many other people have tore up a D70 or who has done a D80 swap.
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Old 01-20-2008, 05:23 PM
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what are you doing with it? i know it can be done but have heard veary few that have broke d70s
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Old 01-20-2008, 05:34 PM
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i broke one put in a d80 with big axle shafts
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Old 01-20-2008, 08:05 PM
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WHats wrong with it. I broke one also, but i broke an 80 too. If you can swap the 80 in but if not just build the 70 stronger.
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Old 01-20-2008, 08:16 PM
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I broke a Detroit locker in mind. Broke the carrier bearing journal clean off.
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Old 01-20-2008, 08:38 PM
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I broke 2 D70 pinion shafts sled pullin so if your going to hook to t he sled switch to the 80 i did. If just drag racing keep the D70
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Old 01-20-2008, 08:45 PM
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i broke one as well but i had a lot of km's on her. the d70 will be fine for you just build it up a bit more.
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Old 01-20-2008, 10:05 PM
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I broke my shaft, it was a 32 spline. I have since upgraded to 35 spline Yukon shafts:


heres the stock shaft compared to the 35 spline Yukon
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Old 01-20-2008, 10:25 PM
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Lance, did you ever find out if a D80 SRW shaft would work in the D70?
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Old 01-20-2008, 10:50 PM
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i put a d80 in no more problems with 37 spline shafts and they are much larger than d70 and a detroit locker. its a little loud upon engagement but its is strong. no more worries
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Old 01-20-2008, 11:28 PM
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My buddy's truck broke one sled pulling when I was behind the drivers seat. Snapped the pinion right in half. Turbo was just getting spooled.
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Old 01-21-2008, 01:29 AM
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Originally Posted by Tate
Lance, did you ever find out if a D80 SRW shaft would work in the D70?
no, I just bought the cut-to-length shafts from randys r&p
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Old 01-21-2008, 02:32 AM
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Twisted the pinion off in mine sled pullin
just put the 80 in like i did
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Old 01-21-2008, 02:50 AM
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I broke my 70 coasting. I guess it had teeth chipped off of it, and I hit a bump one day that made the tooth jump up and catch between the pinion and ring gear, and I had some good chunks out of my pinion when i took it apart. I have another 70 in it right now, but I have an 80 i need to put in soon.

Eric
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Old 01-21-2008, 11:35 AM
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My opinion...The 70 is an ok axle if you keep the truck at close to stock power #s and if your not doing anything but pulling a trailer.

If you want to drag race, sled pull, run big power, the D80 is a smart idea.
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