Farm Equipment - 138, 149 or 160?

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138, 149 or 160?

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=116770
Printed Date: 30 Oct 2025 at 1:09am
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Topic: 138, 149 or 160?

Posted By: 1955allisca
Subject: 138, 149 or 160?
Date Posted: 28 Dec 2015 at 5:30pm

I bought a C earlier today with a G series motor in it. I am unsure which block it has. It has a D10 style manifold. Casting # is Am4902-1 does anyone know what block it is? It has a block drain plug right below where the oil line threads into the block. There is no hole for a fuel pump. My 149 does not have that plug.

Replies:

Posted By: 1955allisca
Date Posted: 28 Dec 2015 at 5:42pm

It also has same valve cover as my 149

Posted By: Calvin Schmidt
Date Posted: 28 Dec 2015 at 7:25pm

Check the engine flange on the left rear side If the serial number starts 10-xxx its a 138

12-xxx its a 149

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Nothing is impossible if it is properly financed

Posted By: 1955allisca
Date Posted: 28 Dec 2015 at 11:06pm

So same location as a 125 would have CE stamped on it?

Posted By: 1955allisca
Date Posted: 29 Dec 2015 at 8:05am

Thanks Calvin its a 149

Posted By: Gary
Date Posted: 30 Dec 2015 at 7:31am

Calvin

What engine was in the D-12 prior to the start of Series II ( Tractor Serial D-12 3001, 1961 )

Gary

Posted By: Calvin Schmidt
Date Posted: 30 Dec 2015 at 4:03pm

Gary, Early D-10/12 had the 138 cu.in. engine. When they got live hydraulics and independent PTO they also got the 149 engine.

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Nothing is impossible if it is properly financed

Posted By: TimNearFortWorth
Date Posted: 31 Dec 2015 at 5:50am

Some with live hydraulics and live PTO out there at the end of the 138 run. I have #2460 which makes it 1960; PO advised his father bought it new as he had plenty of 3-pt. Ford equipment but wanted "Allis power".

Posted By: Gary
Date Posted: 31 Dec 2015 at 5:55am

Calvin

Right

So your earlier reply to the original post is incorrect.

It could be one of the first D-12's with a 138 engine.

Gary

"Check the engine flange on the left rear side If the serial number starts 10-xxx its a 138
12-xxx its a 149"

Posted By: Calvin Schmidt
Date Posted: 31 Dec 2015 at 9:29am

All the info that I have says that the D-10 at serial 3501 and above and the D-12 at serial 3001 and above got the 149 engine, independent PTO and hydraulics.

3 pt hitch was available from the beginning and there was a live hydraulic option with an engine driven pump and a little tank by the distributer before the independent upgrade . That option was low pressure and non traction booster. Have some of each.

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Nothing is impossible if it is properly financed

Posted By: TimNearFortWorth
Date Posted: 31 Dec 2015 at 12:42pm

Interesting data out there on s/n breaks by models and my D12 fence row find had me scratching my head when first found as quill shaft equipped. One can only assume that features were added/changed as they came out of engineering and hit the manufacturing line and somebody had to "bracket" the cutoffs, which are not written in stone on many A-C models.

Posted By: tbran
Date Posted: 31 Dec 2015 at 12:55pm

what about range trans, was that an option?

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When told "it's not the money,it's the principle", remember, it's always the money..

Posted By: Gary
Date Posted: 31 Dec 2015 at 3:36pm

Yes Calvin, again, agree completely.

The point I am making is:

The Torque Tube could be stamped 12 1XXX and would be a 138 cu.in. engine

and NOT a 149 cu.in as you had previously stated.

Gary

Posted By: Dusty MI
Date Posted: 31 Dec 2015 at 3:52pm

I have a D-10 series III with the 149 and the reang transmission.

It makes a very nice set-up for the tractor caravans. It will do 16.25 MPH.

Dusty

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917 H, '48 G, '65 D-10 series III "Allis Express"

Posted By: Calvin Schmidt
Date Posted: 01 Jan 2016 at 9:48am

Gary, the tractor serial number is stamped on the torque tube and the engine number is stamped on the engine flange next to it. That is where some confusion comes in. Early D-12's will have a D-12 serial # and some think because the engine # starts with a 10-xxx, it has a D-10 engine. Not so ,but its will be a 138 engine.

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Nothing is impossible if it is properly financed

Posted By: 1955allisca
Date Posted: 02 Jan 2016 at 8:25am

This tractor is an Allis C it has no numbers on the torque tube, but does have a 12-XXXX stamped on engine flange.