7045 vs 7050 Engine Differences
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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=177279
Printed Date: 02 Apr 2026 at 10:06am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 7045 vs 7050 Engine Differences
Posted By: AllisHunter
Subject: 7045 vs 7050 Engine Differences
Date Posted: 04 Jan 2021 at 5:36pm
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I have decided that I am putting another 426 in my 7045. I am exploring my options and besides rebuilding my engine, I have thought about swapping in another running one. I’ve found an engine out of a 7050 that has been out of a tractor for a few years. It has new injectors and a new pump with around 300 hours on it. I know a 7050 was aftercooled and the 7045 was not. Are there any other major difference or changes that were made to the engine between the two models? Thanks for the continued help!
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Replies:
Posted By: nickia
Date Posted: 04 Jan 2021 at 6:09pm
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I have a 426 with a intercooler on it i have more power than i have tires i guess the thing i wonder about with a engine with a intercooler on it is if you have a big enough radiator for it?
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Posted By: nickia
Date Posted: 04 Jan 2021 at 6:10pm
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mine tractor is a 7040 bought it that way i can pull any thing the 7080 pulls but i believe its taking a toll on my rear end as its not as quite as the 7080
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Posted By: Lonn
Date Posted: 04 Jan 2021 at 6:42pm
The 7045 and 7050 each list a different part number for the radiator so the 7050 might have a thicker core.
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Posted By: Lonn
Date Posted: 04 Jan 2021 at 6:43pm
You can detune the 3700 engine or you can remove the intercooler if you like I suppose.
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Posted By: DougG
Date Posted: 04 Jan 2021 at 6:53pm
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Be careful as dont your 7045 have a Power Shift? That may be the next rebuild !
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Posted By: AllisHunter
Date Posted: 04 Jan 2021 at 8:14pm
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Yes it is a power shift. Is the power shift in a 7060 heavier than the one in a 7045? Thanks!
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Posted By: MACK
Date Posted: 04 Jan 2021 at 9:26pm
Posted By: AC7060IL
Date Posted: 05 Jan 2021 at 1:32am
If possible, swap the 7050 radiator/engine into the 7045 & you’ll create a 7060 minus 5hp.
7060 162hp.
7050 157hp.
7045 147hp.
7045’s drive train is identical to 7050/7060 - 4 pinion diff, 2.55”ring gear,4 diff lock plates,2”finals,& 3.75”axles(7045/7060).
Exceptions: 7050 had 3.625”axles & no power shift trans.
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Posted By: DrAllis
Date Posted: 05 Jan 2021 at 6:12am
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7045 radiator is inadequate on intercooled engines on a HOT DAY. So, as long as you never use the engine at 100% load on days hotter than 70 degrees F, you'll probably be fine.
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Posted By: SilverShoes
Date Posted: 10 Jan 2021 at 6:46am
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This is very interesting, thank you for the information
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