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  #341  
Old 06-11-2008, 01:19 PM
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John Donnelly John Donnelly is offline
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Default Re: IHC Inline 6 Discussion Group

Quote:
Originally Posted by rich eardley View Post
hi there i need help finding what type of I H motor i have it was changed out by the owner before. it has a three piece exh manifold i was told to check id stamping on block but it looks like it was never stamped. did I H leave there crate motors unstamped so you could put old blocks numbers on it? on drivers side of block it has I H cast into it with square block letters. it might be late 50s or 60s engine. it is in a m5h6 truck. thanks rich
Quote:
Originally Posted by Jim Grammer View Post
Rich, you are working with images that are *much* too large for either Photopost or courteous e-mail. I would reduce the resolution on the camera to no greater than 1024x768, or you can edit them with imaging software:

The engine shown in that picture is a RED Diamond engine. In an M5, the stock engine would be a RD 361. But, all RED Diamond engines will interchange, so it could be a 372, 401, 405, 450, or 501...

Hard to say, but given the small size of the carburetor, I would wager that it is still a 361.

-John
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  #342  
Old 06-11-2008, 07:44 PM
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Colin Rush Colin Rush is offline
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Default Re: IHC Inline 6 Discussion Group

Rich,

The carburetor and the air pump on the driver side tell me that the engine was a transplant from a newer truck. I seem to recall that the engine displacement is stamped into a boss about where the air pump is mounted. If you look behind it, I bet you will find it. It will probably say something like "450RED" or "501RD" or something similar.
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  #343  
Old 06-12-2008, 09:59 AM
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Default Re: IHC Inline 6 Discussion Group

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Originally Posted by Colin Rush View Post
Rich,

The carburetor and the air pump on the driver side tell me that the engine was a transplant from a newer truck. I seem to recall that the engine displacement is stamped into a boss about where the air pump is mounted. If you look behind it, I bet you will find it. It will probably say something like "450RED" or "501RD" or something similar.
I doubt very much that that engine is a 450 or 501. The carburetter is too small.

-John
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  #344  
Old 06-14-2008, 07:07 PM
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Default Re: IHC Inline 6 Discussion Group

Here is a picture of a RD450 with the same carb thats in my M-5H-6.
I believe its a later RD450...

Attached Images
File Type: jpg 450 red diamond in a M5.jpg (519.3 KB, 53 views)
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1944 USMC IHC M-5H-6 3 ton cargo truck
1942 WC-56 Dodge Command Car
1942 Dodge WC-55
1961 Dodge Power Wagon
1962 USMC M416 1/4 ton trailer
1962 USMC Willys M170
1965 M101A1 3/4 ton trailer
1968 Kaiser Jeep M715
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  #345  
Old 06-17-2008, 10:57 AM
rich eardley rich eardley is offline
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Default Re: IHC Inline 6 Discussion Group

checked behind air pump there are no numbers stamped found two casting numbers on the block 53363R2 and on head 82917R2 on the red diamond engines witch ones came with a three piece exh manifold thanks rich
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  #346  
Old 06-17-2008, 01:07 PM
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John Donnelly John Donnelly is offline
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Default Re: IHC Inline 6 Discussion Group

Quote:
Originally Posted by rich eardley View Post
checked behind air pump there are no numbers stamped found two casting numbers on the block 53363R2 and on head 82917R2 on the red diamond engines witch ones came with a three piece exh manifold thanks rich
Which Red Diamonds came with a 3 piece exhaust manifold? None of them to my knowledge had a 3 piece manifold. All of them had a two piece manifold that I have ever seen with the exception of the units that came equipped with the factory split manifold, and that wasn't till near the end of production of the Red Diamond engines in the early 1970's.

You could have a 372, a 401, 405, or a 450, but I doubt it is the 450. I checked the 372 I have, and the head casting number matches the one I have, but the block casting number is vastly different.

If there is an engine size number stamped on your engine, It will be on the passenger side of the engine, not the driver's side where your air pump is located. It will also be somewhere near where the block and the head meet. The machined pads on the Red Diamonds moved around over the years, but the fact that you state that your engine has an IH cast in the block says that your engine was manufactured after 1954, since before that, all the engines had the triple diamond logo like the one in my avatar on the drivers side of the block, with "RED DIAMOND" superimposed over the triple diamonds.

If you can't find the number stamped into the block, the only way to know for sure would be to pull the head and measure the bore and the stroke of the engine. At least to my knowledge.

-John
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  #347  
Old 06-17-2008, 04:47 PM
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Default Re: IHC Inline 6 Discussion Group

Hi Guys...

I am thinking this is a RD 450 from the 60's because it has the IH logo in the block where my motor from the 50's has the Red Diamond logo.
I have the same maniflod though.
Here is a picture of Rich's manifold.
Also if you notice there is a bracket on Rich's motor (drivers side head) for the aircleaner with a cross over tube and post to offset it and lower it.
I have blocked those holes on my motor with some bolts and use the WW2 style air cleaner. His motor is a civilian transplant.
I am throwing darts here using some of the visual cues and a few years experience with the Red Diamond motors but heck I could be wrong. IMHO.
Attached Images
File Type: jpg 3 pc maniflod.jpg (1.15 MB, 32 views)
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1944 USMC IHC M-5H-6 3 ton cargo truck
1942 WC-56 Dodge Command Car
1942 Dodge WC-55
1961 Dodge Power Wagon
1962 USMC M416 1/4 ton trailer
1962 USMC Willys M170
1965 M101A1 3/4 ton trailer
1968 Kaiser Jeep M715
Take Care
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Saratoga California

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  #348  
Old 06-17-2008, 07:12 PM
Colin Rush's Avatar
Colin Rush Colin Rush is offline
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Default Re: IHC Inline 6 Discussion Group

Quote:
Originally Posted by John Donnelly View Post
It will be on the passenger side of the engine, not the driver's side where your air pump is located.
I stand corrected. Just goes to show how two years can alter a person's memory.
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  #349  
Old 06-18-2008, 02:28 PM
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Dave Ball Dave Ball is offline
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Smile Re: IHC Inline 6 Discussion Group

John you were right on the motor is a 372 built somewhere in between 1946 and 1969. The bore should be 4.375. possible head casting numbers 82916R, 131892R and 215726R. This motor will have a 3/4 inch diameter distributor shaft hole. 372 motors with block casting 215720 built between 1959 and 1969 should have a 1 inch diameter distributor shaft hole.
That should solve your mystery motor Rich.
To confirm I would check the bore. But I am 99.9% sure that it is a 372 cu. in. 6.1 liter motor.
The big difference in the two 372's is the small diameter distributor shaft motor used a crank with casting # 53917R and the large distributor shaft motor crank casting was 63917R.
I can't find any info on the difference in the cranks. Anyone?
Hope this helps.
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1944 USMC IHC M-5H-6 3 ton cargo truck
1942 WC-56 Dodge Command Car
1942 Dodge WC-55
1961 Dodge Power Wagon
1962 USMC M416 1/4 ton trailer
1962 USMC Willys M170
1965 M101A1 3/4 ton trailer
1968 Kaiser Jeep M715
Take Care
Dave Ball
Saratoga California

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  #350  
Old 06-18-2008, 02:43 PM
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Dave Ball Dave Ball is offline
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Smile Re: IHC Inline 6 Discussion Group

Anyone looking for an engine bearing set for there 401,406 or 450 here are some federeal mogul 30 over on ebay...

Item number: 180114299593

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1944 USMC IHC M-5H-6 3 ton cargo truck
1942 WC-56 Dodge Command Car
1942 Dodge WC-55
1961 Dodge Power Wagon
1962 USMC M416 1/4 ton trailer
1962 USMC Willys M170
1965 M101A1 3/4 ton trailer
1968 Kaiser Jeep M715
Take Care
Dave Ball
Saratoga California

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