Oldsmobile engine casting number identification - The 1947 - Present Chevrolet & GMC Truck Message Board Network

the baron · 09-15-2004, 03:27 AM

Hi Guys ,

Sorry to annoy you again with my numbers

, but I found the casting number on the Olds engine I have into my Burb

I did a search on the net , and as the casting numbers for the Chevrolet engines are easily available in books , for the Olds ones , it seems almost impossible to get ( or I'm too stupid to find the right site

)

the casting numer is 554965 2A ( that 2A being bigger in size )

this all because I'm convinced that my engine is 350ci , but it could be also a 307 or a lesser cubing engine ( 260 ? )

BTW , I have EGR on it , so I presume a 307 is out of the question...

I was unable to read the serie number on the engine , too muddy/greasy & I'm not a contortionist either ...

Thanks y'all

the Baron

RockHQ · 09-15-2004, 04:44 AM

www.442.com (FAQ section) has the most complete listings of Olds casting numbers (anything from carbs to oil pans to heads you name it) and i was unable to find your code there.

The block casting number is located to the right of the oil fill tube, on top of the timing chain cover (behind the water pump). This is what you need to identify your engine since all Olds heads from 1964 to 1990 are interchangeable (to a point anyway).

2A refers to 260 (YUCK!) heads, sorry to say. Tiny, tiny valves and runners. Boat anchors and nothing more.

EGR was found in pretty much all small and big blocks so do not rule anything out. 307s especially had EGR.

All Olds blocks from about 1977 onwards have their displacement cast into the side of the block (very noticeable) .

the baron · 09-15-2004, 10:29 AM

[QUOTE=RockHQ
2A refers to 260 (YUCK!) heads, sorry to say. Tiny, tiny valves and runners. Boat anchors and nothing more.[/QUOTE]

ok !

RockHQ , thank you for having ruined my day

I guess life sucks...

good news is : I can get by a friend of mine a second hand 350 Olds for about 700 € , hehe

...

but as long as that engine I have now is driveable and is still running , I will keep it , who care's anyway ?

the Baron

Gibble · 09-15-2004, 10:58 AM

According to this RockHQ is right, it's a 260.

http://www.butlers-a1.com/oldsm.htm

1977-1982 - 260cid/4.3L, 3.50 bore, v-8

09-15-2004, 03:27 AM	#1
the baron Registered User Join Date: Mar 2003 Location: Liège , Belgium Posts: 263	Oldsmobile engine casting number identification Hi Guys , Sorry to annoy you again with my numbers , but I found the casting number on the Olds engine I have into my Burb I did a search on the net , and as the casting numbers for the Chevrolet engines are easily available in books , for the Olds ones , it seems almost impossible to get ( or I'm too stupid to find the right site ) the casting numer is 554965 2A ( that 2A being bigger in size ) this all because I'm convinced that my engine is 350ci , but it could be also a 307 or a lesser cubing engine ( 260 ? ) BTW , I have EGR on it , so I presume a 307 is out of the question... I was unable to read the serie number on the engine , too muddy/greasy & I'm not a contortionist either ... Thanks y'all the Baron __________________ 1982 Suburban 2WD , 260ci Olds engine,TH400 , will get a 1979 front clip , might be ready in ... 2016 1985 Chevy Van ( 305/350 ) , "Kellogg" equipped , my actual D.D. 1960 Girl Friend , frame still good , body has some dents

09-15-2004, 04:44 AM	#2
RockHQ ROCKET POWER! Join Date: Feb 2003 Location: Finland, Europe Posts: 509	www.442.com (FAQ section) has the most complete listings of Olds casting numbers (anything from carbs to oil pans to heads you name it) and i was unable to find your code there. The block casting number is located to the right of the oil fill tube, on top of the timing chain cover (behind the water pump). This is what you need to identify your engine since all Olds heads from 1964 to 1990 are interchangeable (to a point anyway). 2A refers to 260 (YUCK!) heads, sorry to say. Tiny, tiny valves and runners. Boat anchors and nothing more. EGR was found in pretty much all small and big blocks so do not rule anything out. 307s especially had EGR. All Olds blocks from about 1977 onwards have their displacement cast into the side of the block (very noticeable) . __________________ What did i do last nite? I had a wonderful time, That's what they tell me What did i do last nite? 1979 C-10 shortfleet: Olds 350, Th400, 12 bolt Current project: 1969 Olds 455 W-30, needing a rebuild

09-15-2004, 10:29 AM	#3
the baron Registered User Join Date: Mar 2003 Location: Liège , Belgium Posts: 263	[QUOTE=RockHQ 2A refers to 260 (YUCK!) heads, sorry to say. Tiny, tiny valves and runners. Boat anchors and nothing more.[/QUOTE] ok ! RockHQ , thank you for having ruined my day I guess life sucks... good news is : I can get by a friend of mine a second hand 350 Olds for about 700 € , hehe ... but as long as that engine I have now is driveable and is still running , I will keep it , who care's anyway ? the Baron __________________ 1982 Suburban 2WD , 260ci Olds engine,TH400 , will get a 1979 front clip , might be ready in ... 2016 1985 Chevy Van ( 305/350 ) , "Kellogg" equipped , my actual D.D. 1960 Girl Friend , frame still good , body has some dents

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09-15-2004, 10:58 AM	#4
Gibble mmmm....Rye and Coke Join Date: Apr 2003 Location: MB, Canada Posts: 485	According to this RockHQ is right, it's a 260. http://www.butlers-a1.com/oldsm.htm 1977-1982 - 260cid/4.3L, 3.50 bore, v-8



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