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Farmall & IHC Tractors Discussion Forum
Show Parts for Model:

Farmall 450

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Larry James

12-04-2011 09:15:38
174.124.140.26



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Recently I purchased a farmall 450 which I know does not have the original engine. Is there someone out there who could help me identify the engine from the following information. Casting Codes : C248 (probably an M engine) Additonal numbers are : 6722DJ, 1-17-C. Also included a stenciled number, 3645, on the machined area. Thank You in advance for any help you can give me.




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mkirsch

12-05-2011 06:15:55
64.80.110.75



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 Re: Farmall 450 in reply to Larry James, 12-04-2011 09:15:38  
If the C were really an O, would that make more sense?

O code would be 1945, right?

Of course it could be a replacement block cast in 1957. It could have 450 internals.



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D Slater

12-05-2011 13:09:28
184.15.30.71



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 Re: Farmall 450 in reply to mkirsch, 12-05-2011 06:15:55  
Tried to think of another date that would fit, trouble is in 45 the block casting # suffix wasn't up to DJ. Anything can happen but have only saw blocks with with C248 cast on the block dated after M production ended. Do have some information they used C248 blocks after that with another serial # system but don't know what the block casting # was on them.



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Larry James

12-05-2011 13:53:36
207.118.182.25



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 Re: Farmall 450 in reply to D Slater, 12-05-2011 13:09:28  
I did some more checking on the casting numbers, and the numbers I gave seem correct. Looking down from the top of the engine on the manifold side there is a cast no. that reads 1-29-C on the head if that helps. Thanks Larry



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Larry James

12-04-2011 13:37:19
174.124.140.26



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 Re: Farmall 450 in reply to Larry James, 12-04-2011 09:15:38  

Tractor serial number is 4289 S, with ps, torque amplifer, 3 hydraulic valves,and straight drawbar. Will post pictures soon, tractors being restored. Thanks Larry

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D Slater

12-04-2011 14:13:33
184.15.30.71



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 Re: Farmall 450 in reply to Larry James, 12-04-2011 13:37:19  
Engine # stenciled in is in the range to match a original engine # for that serial # tractor. Strange, engine looks just like a late model M block except for the C248 on the side. After more thinking I can't remember seeing a 6722DJ block with a C date code before. Most that late have 6943 or a 6 digit cast #. Interesting



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D Slater

12-04-2011 12:27:50
184.15.30.71



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 Re: Farmall 450 in reply to Larry James, 12-04-2011 09:15:38  
6722DJ is the casting # for a M block, but original M blocks didn't have the size on them.

I suspect its a replacement block from IH. Does it have a small plate behind the carburetor on the engine block? IH done some strange things with some replacement blocks so there's some possibility the bore could be 281 size. Maybe the 3645 was the original engine # that someone added back on. What is the tractor serial #?
Also don't know how long after M production ended that C248 engines were used for other aplications. Have saw replacement blocks with C248 dated to after the middle sixties.
If 1 17 C is the date code, cast in 57.
This post was edited by D Slater at 12:30:09 12/04/11.

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Larry James

12-04-2011 12:22:14
174.124.140.26



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 Re: Farmall 450 in reply to Larry James, 12-04-2011 09:15:38  
Thanks for the replies, I guess for now it will stay in. The engine runs excellent with 70 lbs oil pressue when warmed up. No oil leaks or strange noises. I think the engine has been gone through because it has all new gaskets throughout, head, oil pan, valve cover and side cover. This spring I will take it to County Line Implement N of Oconto, Wi. to have it put on the dyno to find out the hp. Just doesn't sound right to have a 39 m engine in a 450. thanks again for the information. Larry

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d beatty

12-04-2011 10:14:09
71.239.245.237



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 Re: Farmall 450 in reply to Larry James, 12-04-2011 09:15:38  
The Farmall 450 should have a 281 in it. The 248 is a M engine. If you want to put back to a 281 and can't find a 281 block you can put 281 sleeves and pistons in a 264 block.



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FC Andy

12-04-2011 10:05:55
74.126.84.52



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 Re: Farmall 450 in reply to Larry James, 12-04-2011 09:15:38  
The C248 on the machined part is the dead giveaway. Serial # points to being a '39 M block. 1-17-C is a casting date code, Apparantly January 17, 1939. I thought '39 was letter A, though. I don't have a book in front of me at the moment.



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CNKS

12-04-2011 11:05:45
216.144.104.128



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 Re: Farmall 450 in reply to FC Andy, 12-04-2011 10:05:55  
Something is wrong with the numbers, C is either 1957 or 1933. Serial is definitely 1939.



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MikeinKy

12-04-2011 09:35:41
24.227.196.17



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 Re: Farmall 450 in reply to Larry James, 12-04-2011 09:15:38  
I'm no expert, but it appears to be a M engine. If it is the correct engine it will have 281 cast on it.



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