Farm Equipment - AC 8550 are they any good?

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AC 8550 are they any good?

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=42632
Printed Date: 30 Apr 2025 at 3:03am
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Topic: AC 8550 are they any good?

Posted By: victoryallis
Subject: AC 8550 are they any good?
Date Posted: 24 Dec 2011 at 4:52pm

Came across a decent looking 8550. How reliable are they? Looking to hear any experiences good or bad on these. Do they have common parts to any other Allis's. Are parts still available for these?

Replies:

Posted By: Dale
Date Posted: 24 Dec 2011 at 6:13pm

I like mine. Lots of muscle. I think if you buy right they'll hold their value too.Check the drive line to see if the updates have been done. What year?-the early ones -1977- needed engine updates I understand-the fact yours is still running means they must have got them.

The shift cables are notorious for making it difficult to get into gear. If that's the problem new ones make a huge difference (and they're available). Transmission brake is often over used and worn out and makes shifting difficult. All the filters are still available.

How many hrs? Keep the revs below the max by a couple of 100-better yet-get the inj pump set up to a lower rev max. Does it have 3 pt and stadium package?
If you want PM me and I'll tell what I know-which is a lot less than some others on here.

Posted By: TREVMAN
Date Posted: 24 Dec 2011 at 11:08pm

Get the pump set like a 4w-305. They are as reliable as any Allis, very strong pullers, came standard with pto and fenders while the other colors were "optional". Detuned 844 Allis diesel, very good tractors overall. Problem is they were usually overpulled, but they would take it for years and keep running. In these parts they sell for $10000 , in my opinion, alot of tractor for the money, Trev.

Posted By: jorstad brothers
Date Posted: 25 Dec 2011 at 1:01am

we have had great luck with ours the one u saw on the trailer going in for survice. drive lines are very inporent to keep up on. we have never lost a day in the field because of the tractor itself. but ours has a 855 @350 and a fass fuel system raidals and lots of weight. its all about maintance