Special thanks to Scott R. Clark for submitting this data

OLDSMOBILE ENGINE IDENTIFICATION 1954-1963

The engine code number can be found on the ID plate on the left 
front door hinge post.  Prefixes to this number are used to identify: first, 
the model year, and second the engine series.  
On 1959-1963 engines, the 371 has gold valve covers, and the 394 
has green valve covers.

		Year            Prefix            Engine size 
		---------------------------------------------
		1954-56         7,8,or 9          324 V8

		1957-58         7,8,or 9          371 V8

		1959-60         7                 371 V8
                  
                                8 or 9            394 V8

		1961-63         2,5,or 8          394 V8

ENGINE SPECIFICATONS 1954-1963

YEAR/SERIES       BORE AND STROKE     C.I.D     HORSEPOWER      TORQUE      C.R.
-------------------------------------------------------------------------------------

1954 88           3 7/8 x 3 7/16      324.3     170@4000         295@2000   8.25-1
1954 S88/98       3 7/8 x 3 7/16      324.3     185@4000         300@2000   8.25-1

1955 88           3 7/8 x 3 7/16      324.3     185@4000         320@2000   8.5-1
1955 S88/98       3 7/8 x 3 7/16      324.3     202@4000         332@2400   8.5-1

1956 88           3 7/8 x 3 7/16      324.3     230@4400         340@2400   9.25-1
1956 S88/98       3 7/8 x 3 7/16      324.3     240@4400         350@2800   9.25-1

1957 ALL          4 x 3 11/16         371       277@4400         400@2800   9.25-1
 
1958 ALL          4 x 3 11/16         371       NOTE 1           NOTE 1     10.0-1

1959 88           4 x 3 11/16         371       270@4600         390@2400   9.75-1
1959 S88/98       4 1/8 x 3 11/16     394       315@4600         435@2800   9.75-1

1960 88           4 x 3 11/16         371       240@4600         375@2400   8.75-1
1960 S88/98       4 1/8 x 3 11/16     394       315@4600         435@2800   9.75-1

1961 D88          4 1/8 x 3 11/16     394       250@4200         405@2400   8.75-1
1961 S88/98       4 1/8 x 3 11/16     394       325@4600         435@2800   10.0-1
1961 F-85         3.5 x 2.8           215       NOTE 2           NOTE 2     8.75-1

1962 D88          4 1/8 x 3 11/16     394       280@4200         430@2400  10.25-1
1962 S88/98       4 1/8 x 3 11/16     394       330@4600         440@2800  10.25-1
1962 F-85         3.5 x 2.8           215       NOTE 3           NOTE 3    NOTE 3

1963 D88/S88/98   IDENTICAL TO 1962
1963 F-85         3.5 X 2.8           215       NOTE 4           NOTE 4    NOTE 4
 
   
	NOTE 1:  With 2bbl Carburetor H.P-265@4400  TORQUE-390@2400
		 With 4bbl Carburetor H.P-305@4600  TORQUE-410@2800
		 With 3 2bbl carbs    H.P-312@4600  TORQUE-415@2800

	NOTE 2:  With 2bbl Carburetor H.P-155@4800  TORQUE-210@3200    
		 With 4bbl Carburetor H.P-185@4800  TORQUE-230@3200
		 
	NOTE 3:  With 2bbl Carburetor H.P-155@4800  TORQUE-210@3200
		 With 4bbl Carburetor H.P-185@4800  TORQUE-230@3200 C.R 10.25-1
       		  
	NOTE 4:  IDENTICAL TO 1962 EXCEPT 4bbl C.R. 10.75-1