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1969 Chevelle Engine ID Suffix 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

 

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1964

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1965

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1966

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1967

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1968

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1969

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1970

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1971

© ChevelleWorld
1972

 

Engine

Transmission

Notes

Code

Size-Carb

HP-RPO

    
AD 230-1 140 TH-350  
AM 230-1 140 Manual  
AN 230-1 140 Powerglide  
AO 230-1 140 TH-350  
AP 230-1 140 Manual A.C.
AQ 230-1 140 Powerglide A.C.
AR 230-1 140 TH-350 A.C.
250 ↓        
BB 250-1 155-L22 Powerglide
Torque Drive		  
BC 250-1 155-L22 Powerglide A.C.
BD 250-1 155-L22 TH-350  
BE 250-1 155-L22 Manual  
BF 250-1 155-L22 Manual A.C.
BH 250-1 155-L22 TH-350 A.C.
307 ↓        
DA 307-2 200-L14 Manual  
DC 307-2 200-L14 Powerglide  
DD 307-2 200-L14 TH-350  
DE 307-2 200-L14 Manual  
350 ↓        
HA 350-4 300-L48 Manual  
HB 350-4 300-L48 TH-350  
HC 350-2 250-L65 Manual  
HD 350-2 250-L65 TH-350  
HE 350-4 300-L48 Powerglide  
HF 350-2 250-L65 Powerglide  
hp 350-4 300-L48 Manual Heavy Duty Clutch
HQ 350-4 255-LM1 Manual  
HR 350-4 255-LM1 Powerglide  
HS 350-4 255-LM1 TH-350  
396 ↓        
JA 396-4 325-L35 Manual A.I.R.
JC 396-4 350-L34 Manual A.I.R.
JD 396-4 375-L78 Manual A.I.R.
JE 396-4 350-L34 TH-400 A.I.R.
JK 396-4 325-L35 TH-400 C.C.S.
JV 396-4 325-L35 Manual A.I.R./Heavy Duty Clutch
KB 396-4 350-L34 Manual A.I.R./Heavy Duty Clutch
KD 396-4 375-L78 Manual A.I.R./Heavy Duty Clutch
KF 396-4 375-L78 TH-400 A.I.R.
KG 396-4 375-L78
(w/L89)		 Manual A.I.R./Aluminum Heads
KH 396-4 375-L78 (w/L89) TH-400 A.I.R./Aluminum Heads
KI 396-4 375-L78 (w/L89) Manual A.I.R./Heavy Duty Clutch/Aluminum Heads
402 ↓        
CJA 402-4 325-L35 Manual A.I.R.
CJC 402-4 350-L34 Manual A.I.R.
CJD 402-4 375-L78 Manual A.I.R.
CJE 402-4 350-L34 TH-400 A.I.R.
CJK 402-4 325-L35 TH-400 C.C.S.
CJV 402-4 325-L35 Manual A.I.R./Heavy Duty Clutch
CKB 402-4 350-L34 Manual A.I.R./Heavy Duty Clutch
CKD 402-4 375-L78 Manual A.I.R./Heavy Duty Clutch
CKF 402-4 375-L78 TH-400 A.I.R.
CKG 402-4 375-L78 (w/L89) Manual A.I.R./Aluminum Heads
CKH 402-4 375-L78 (w/L89) TH-400 A.I.R./Aluminum Heads
CKI 402-4 375-L78 (w/L89) Manual A.I.R./Heavy Duty Clutch,
Aluminum Heads **
427 ↓        
MP 427-4 425-L72 TH-400 COPO
MQ 427-4 425-L72 Manual COPO
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To date several legitimate 3-letter suffix coded 402s in a 1969 Chevelle SS 396-optioned Chevelle has turned up like this July 29 dated 402.

 

A total of 54,851 6-cyl engines were installed; 25,919 230-cid and 29,932 250-cid engines.
A total of 448,501 8-cyl engines were installed; 245,488 307-cid, 116,383 327-cid, and 86,630 396-cid engines. This figure does not include the 323 427-cid COPO engines.

 

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Since the 427-cid COPO Chevelles were NOT built as SS 396 optioned Chevelles, the 323 number would, logically, be subtracted from the base 396-cid engine totals. See the COPO page.

 

The L35 engine was also available in non-SS 396 optioned Chevelles as a special ' police package ' with a 330hp rating that also required power disc brakes. Whether any of these were actually sold is another story. If they were, they were probably sold via the Fleet & Special Order or a special COPO process and the engines may not have been counted.

 

# Vintage Vehicle Services documentation indicate:
Of 2,673 13427 & 13437 300 Deluxe coupes & sport coupes built for sale in Canada; 36 were built with the L35 engine.
Of 787 13667 Malibu convertibles build for sale in Canada; 726 were built with the L35 engine.
Of 9,612 13637 Malibu sport coupes built for sale in Canada; 294 were built with the L34 engine and 427 were built with the L35 engine.
Of 10,828 13637 Malibu sport coupes built for sale in the U.S. 1,598 with L35 engine.
Of 10,828 13637 Malibu sport coupes built for sale in the U.S. 769 were built with the L34 engine.

201 Malibu sport coupes were (built in the U.S.) 'exported' for sale in Canada.

 

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When the base 325hp 396cid engine was ordered with an automatic transmission it would have the Closed Combustion System (CCS) instead of the Air Induction Reactor emission system.