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Straight eight engine numbers


Pete Phillips

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The BCA judging manual (page 25) also has some info (http://www.buickclub.org/BCA%20JUDGING%20MANUAL/BCAjudgingrev2.pdf) and these links:

http://www.teambuick.com/forums/view.php?pg=indent_engine_til_52

http://www.teambuick.com/forums/view.php?pg=indent_engine_53-58

Series digit is the first digit for 1941 and earlier and last digit for 1942 and later.

1930-1955 Buick Master Chassis Parts Book.pdf

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Thanks to all for the leads. I've now been able to identify all of the engines except one.

It is a small series engine, black valve cover (no other coat of paint other than black), lower block is definitely turquoise like other production straight eights after 1941; strange numbers on the numbering surface that don't correspond to anything; has the earlier style water pump; has the bolt holes on the side for the 1948 & newer engine mounts but they appear to have never been used; engine number seems to be 35050W15; or could be 35156W15; or even 85166W15--none of which make sense and there are two styles of numbers, none of which match the normal size and style of Buick engine numbers. I'll try to attach some photos.

Pete Phillips, BCA #7338

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Are you sure that engine is not a replacement engine, sold brand new by Buick to replace a worn out engine. The installing dealer typically hand stamped the worn out engine's number on the pad, as the factory left the pad blank on those engines.

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  • 3 weeks later...
  • 8 years later...

Most states in the U.S. used the engine number, rather than the chassis number, for the V.I.N. on the car's title, prior to 1952 or 1953. If the engine in the car was changed, it's very likely that the old engine number was ground off so as not to confuse one car's VIN with another, if the engine was still good and put in another car. Something like that could be the reason the engine number is ground off in one of the photos above.

 

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By the pad with 4 bolts it was originally in a 1948 or later engine.

Water pump design/casting changed about 1950 (not 100% sure). 

Have a photo of pump and the other side? 263ci have a different block casting

What is it now fitted to?

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23 hours ago, 1939_Buick said:

By the pad with 4 bolts it was originally in a 1948 or later engine.

Water pump design/casting changed about 1950 (not 100% sure). 

Have a photo of pump and the other side? 263ci have a different block casting

What is it now fitted to?

 

 Yes, 1950.  

 

  Ben

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  • 4 months later...

Texas (and probably other states) have a form to complete when an engine change is made in a vehicle whose model year uses sthe Engine number as the VIN.  On "modified cars" of those earlier years, when an engine change was made, you could also take the car to the local DPS office and get it inspected for what it is, then the DPS would issue "a number" to use to title the car with.  Which might be what the number is on the referenced title.

 

I believe there is a way to "raise" the number which has been damaged on the first block picture?  As I understand it, it can be used to see what stamping numbers might have been machined-off during an engine rebuild or otherwise.

 

You might network with some local people to see whom to talk to at your state DMV office to see what their rules might be.  Show them the title imaged above and such, too.

 

Just some thoughts,

NTX5467

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