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1973 El Camino 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, distributor, and exhaust manifolds were not installed at the engine assembly plant but rather at the final assembly plant.

Engine

Transmission

Notes

Code

Size-Carb

HP-RPO

    
CCA 250-1 110 Turbo Hydra-Matic  
CCC 250-1 110 Manual-3  
CHA 307-2 115 Turbo Hydra-Matic  
CHB 307-2 115 Manual  
CHC 307-2 115 Turbo Hydra-Matic N.B.2
CHD 307-2 115 Manual N.B.2
CKA/CKB 350-2 145-L65 Manual  
CKC 350-2 145-L65 Manual N.B.2
CKK 350-2 145-L65 Turbo Hydra-Matic N.B.2
CKL 350-2 145-L65 Turbo Hydra-Matic 350/400  
CKB 350-4 175-L48 Manual  
CKD 350-4 175-L48 Turbo Hydra-Matic N.B.2
CKH 350-4 175-L48 Manual N.B.2
CHJ 350-2 175-L48 Turbo Hydra-Matic 400  
CLM 350-4 175-L48 Police  
CKR 350-4 175-L48 Police N.B.2
CMM 350-4 175-L48 Turbo Hydra-Matic 400 Wagon
CWB 454-4 245-LS4 Turbo Hydra-Matic 400  
CWC 454-4 245-LS4 Manual N.B.2
CWD 454-4 245-LS4 Turbo Hydra-Matic 400 N.B.2
CWR 454-4 245-LS4 Manual  

N.B.2: Equipment required on California vehicles includes A.I.R. and camshaft with longer valve overlap.