Engine ID help - ClassicOldsmobile.com

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Engine ID help

Old October 9th, 2012, 08:10 PM
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Question Engine ID help

Hello all. c
Can anybody help me with proper ID on this? Olds engine, block casting on bellhousing is No.561747, Intake casting No. 57145. Stamped on deck of block between No.5 and 7 cyl. is R239123. It is complete with carbeurators. It has a muncy m 20 four speed connected to it. This is in a 1932 Ford (sorry) roadster i just bought. any help is greatly appreciated. thanks, Jim
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Old October 9th, 2012, 09:15 PM
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No need to repost the same exact question twice but here it goes. 571145 is a '57-'58 J-2 triple carb intake. If you have #16 cylinder heads, it's telling me you have '57 or '58 heads. Check the bell housing area for a number. If it is something like XXXXXX-4 it is telling me you have a 4 inch bore which equals a 371.
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Old October 9th, 2012, 10:32 PM
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Exclamation engine ID

The moderator stated the newby forum is not for this purpose so i put it in the tech area. It is for introducing ones self. Just following what I thought was proper protocal. The bellhousing casting number is plainly stated in the previous question. Thanks, Jim
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Old January 11th, 2015, 04:46 PM
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Ok, so I have checked in several places I still no answer ......

Oldsmobile rocket 88 engine casting number .... 561747



The question was asked in 2005 by a guy from the netherlands ... H.A.M.B

In 2008 a guy from oregen, posted he had one, but no info ... H.A.M.B

In 2009 a guy from san diego posted he had two, but no info ... H.A.M.B

In 2011 a guy from RI posted he had one, but no info ... Hotrodders.com

The question was asked here in 2012 .... Still no answer

Oldsmolie block casting number 1949-1965 .... Doesn't have it listed

Muscle car club, oldsmobile casting 1949-1979 ... Doesn't have it listed

442.com, casting list ... Doesn't have it lsted




...... So does anyone know the casting year for the oldsmobile block with a casting number of 561747

My new rust bucket have one in it and
It is a 1949 Oldsmobile 88 with a display hood

Just trying figure out this cars history

Thanks
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Old January 11th, 2015, 05:51 PM
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It is quite common to misread casting numbers.

nothing "similar" at
http://musclecarclub.com/members/cas...smobile1.shtml

which appears otherwise pretty comprehensive.


here is a block casting # pic
http://speednik.com/files/2013/09/chevyasylum-com.jpg




maybe your 561747 is not the BLOCK casting ID.

Or maybe you have a hella rare casting.

if we go by the concept that they made up casting / part numbers more or less sequentially, then it dates as about a 1956 block.

Last edited by Octania; January 11th, 2015 at 05:53 PM.
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Old January 12th, 2015, 04:42 AM
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Your right, misreading a rust bucket is easy to... But pictures are cool
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Last edited by The Eye; January 12th, 2015 at 04:43 AM. Reason: Forgot to add pic
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Old January 12th, 2015, 04:48 AM
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This motor is in a 1949 olds 88
1949-1964 ... Casting number is on bell housing , right side and is 6 numbers
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Old January 12th, 2015, 05:12 AM
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561747 is the casting number for a 303.
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Old January 12th, 2015, 05:15 AM
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Originally Posted by okie88 View Post
561747 is the casting number for a 303.

Hey thanks, any idea on the year

And again thanks
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Old January 12th, 2015, 05:25 AM
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There is a series of letters and numbers between the 1st and 2nd exhaust ports on the drivers side of the block, below the head (visible with the head on). They should start with a B. If you give me that series I can tell you what year it is.
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Old January 12th, 2015, 09:33 AM
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Originally Posted by okie88 View Post
561747 is the casting number for a 303.
Please cite the source of this information so that we can all find it from now on. I would like to add this # to my PN database.

Kind of funny that the internet has NO mention of this casting number at all. You would think somebody somewhere would add that to a published list.

As for the picture, it sure looks like 561747 to me, but it's so close that there is no telling what part it is on, or where at on that part.

Back to "hella rare casting"
Does not mean valuable necessarily, might be the first year of 303, and few left and fewer folks that care to build or maintain the smallest of the small.

Get okie88 the factory application stamp and watch the info flow

Last edited by Octania; January 12th, 2015 at 09:36 AM.
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Old January 12th, 2015, 07:12 PM
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The picture is of the casting number, which is located on the bellhousing, passenger side... 3/4" tall
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Old January 12th, 2015, 07:18 PM
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And I'm guessing that it has a story behind it .... It sits under this hood
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