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1965 Chevelle Engine ID Codes

 

The engine identification code consists of the engine assembly plant, the engine assembly date, and 3 letter suffix indicating the cubic inch displacement, the horsepower rating, and generally, what type of transmission was to be installed with the engine. Manual transmissions required a bushing in the rear of the bellhousing where an automatic transmission did not. Many engine "accessories" such as the carburetor, alternators, and power steering units were not installed at the engine assembly plant but rather at the final assembly plant.

 

Engine stamp samples

 

© ChevelleWorld
1964

© ChevelleWorld
1965

© ChevelleWorld
1966

© ChevelleWorld
1967

© ChevelleWorld
1968

© ChevelleWorld
1969

© ChevelleWorld
1970

© ChevelleWorld
1971

© ChevelleWorld
1972

 

Engine

Transmission

Notes

Code

Size-Carb

HP-RPO

    
AA 194-1 120 Manual-3  
AC 194-1 120 Manual-3 Heavy Duty Clutch
AG 194-1 120 Manual-3 A.C.
AH 194-1 120 Manual-3 Heavy Duty Clutch/A.C.
AK 194-1 120 Manual-3 Taxi
AL 194-1 120 Powerglide  
AN 194-1 120 Powerglide Taxi
AR 194-1 120 Powerglide A.C.
230 ↓        
CA 230-1 140-L26 Manual-3  
CB 230-1 140-L26 Manual-3 A.C.
CC 230-1 140-L26 Powerglide  
CD 230-1 140-L26 Powerglide A.C.
283 ↓        
DA 283-2 195 Manual-3  
DB 283-2 195 Manual-4  
DE 283-2 195 Powerglide  
DG 283-4 220-L77 * Manual-3/4  
DH 283-4 220-L77 * Powerglide  
327 ↓        
EA 327-4 250-L30 Manual-3/4  
EB 327-4 300-L74 Manual-3/4 High Perf, AFB Carb
EC 327-4 350-L79 Manual-3/4 HD Spcl. High Perf, Holley Carb
ED 327-4 350-L79 Manual-3/4 HD Transistor Ignition, Holley Carb
EE 327-4 250-L30 Powerglide  
EF 327-4 300-L74 Powerglide High Perf, AFB Carb
396 ↓        
IX 396-4 375-L37 Manual-4 Z16 Option, Spec. High Perf
IY 396-4 375-L37 Manual-4 COPO, Spec. High Perf

A total of 143,943 6-cyl engines were installed; 75,202 194-cid and 68,741 230-cid engines.
A total of 234,675 8-cyl engines were installed; 178,599 283-cid, 55,875 327-cid, and 201 396-cid engines.

Reported sales as options:
RPO L26 - 68,741
RPO L30 - 36,261
RPO L74 - 13,592
RPO L79 - 6,021
* Oddly, there are no reported sales figures for the RP0 L77 engine.

There is no breakdown of engine type or size by specific series/model other than 6-cyl. vs. 8-cyl.
The 396 8-cyl engine was only available in the 13837/67 Malibu SS.

Canadian Chevelles are not broken down by specific engine size, only engine type.
A total of 12,130 6-cyl engines and a total of 7,002 8-cyl engines were installed Canadian Chevelles.

Vintage Vehicle Services documentation indicates 40 13867 Malibu SS convertibles with left hand drive were exported from Oshawa.