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Allis chalmers 8070

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steve(oh) View Drop Down
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Joined: 12 Sep 2009
Location: ohio
Points: 110
Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(oh) Quote  Post ReplyReply Direct Link To This Post Topic: Allis chalmers 8070
    Posted: 15 Jul 2023 at 3:49pm
Good evening, we bought a 8070 with a bad engine and am trying to figure out what I want to do with it. I know the Cummins swap is probably the most go to answer. Does anyone have a running 426 though that they are looking to part with? Im not opposed to swapping to a 8.3 or even rebuilding this one depending on how bad it is. Have not got it home yet to even see what I am working with. If I could find a decent engine out of a N6 or a 8050 or 8070 I would consider that route.
When your working on something how does it always seem that merphy's law come into affect?

Wide open, Untill you see God. Then Brake
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DSeries4 View Drop Down
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Joined: 12 Sep 2009
Location: Ontario, Canada
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DSeries4 Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2023 at 8:30pm
If it was me, I would rebuild what is there.  At least I will know everything will be 100 percent when done.  A used engine (Allis or Cummins) would be a crap shoot.  On top of that, you would have to try to fit the Cummins fit in the tractor and make everything play nice.

I am also a purist, so that also affects my decision!
'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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steve(oh) View Drop Down
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Joined: 12 Sep 2009
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(oh) Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2023 at 9:18pm
100% on the purest lol. It usually ends up costing me more money then other options though
When your working on something how does it always seem that merphy's law come into affect?

Wide open, Untill you see God. Then Brake
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victoryallis View Drop Down
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Joined: 15 Apr 2010
Location: Ludington mi
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Post Options Post Options   Thanks (0) Thanks(0)   Quote victoryallis Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2023 at 9:22pm

I have a 7580 with a Cummins the Allis drivetrain really can’t handle a Cummins.   Dr Allis can get a more scientific answer why.  The carnage gets expensive after a bit.   
8030 and 8050MFWD, 7580, 3 6080's, 160, 7060, 175, heirloom D17, Deere 8760
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rtwfarm View Drop Down
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Joined: 26 Feb 2012
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rtwfarm Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2023 at 9:42pm
I got a 8070 with bad transmission. Has good motor

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