Farm Equipment - Allis chalmers 8070

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Allis chalmers 8070

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=196164
Printed Date: 14 Aug 2025 at 11:39pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Allis chalmers 8070

Posted By: steve(oh)
Subject: Allis chalmers 8070
Date 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.

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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

Replies:

Posted By: DSeries4
Date 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!

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'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

Posted By: steve(oh)
Date Posted: 15 Jul 2023 at 9:18pm

100% on the purest lol. It usually ends up costing me more money then other options though

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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

Posted By: victoryallis
Date 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.

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8030 and 8050MFWD, 7580, 3 6080's, 160, 7060, 175, heirloom D17, Deere 8760

Posted By: rtwfarm
Date Posted: 15 Jul 2023 at 9:42pm

I got a 8070 with bad transmission. Has good motor

402-469-1738