1968 Chevelle Engine ID Codes - Engine Pad

[ 1964 ] | [ 1965 ] | [ 1966 ] | [ 1967 ] | [ 1968 ] | [ 1969 ] | [ 1970 ] | [ 1971 ] | [ 1972 ]

Engine

Transmission

Notes

Code

Size-Carb

HP-RPO

  
BA230-1140Manual-3Overdrive
BB230-1140Manual-3Heavy Duty Clutch/A.C.
BC230-1140Manual-3Heavy Duty Clutch
BD230-1140Manual-3A.C.
BF230-1140Powerglide 
BH230-1140PowerglideA.C.
250 ↓    
CM250-1155-L22Manual-3Overdrive
CN250-1155-L22Manual-3A.C.
CQ250-1155-L22Powerglide 
CR250-1155-L22PowerglideA.C.
307 ↓    
DA307-2200Manual-3Overdrive
DB307-2200Manual-4 
DE307-2200Powerglide 
DF307-2200Powerglide 
DN307-2200Manual-3Heavy Duty Clutch
327 ↓    
EA327-4275-L30Manual-3/4 
EC *327-4275-L30PowerglideDocumented on KC-built 13680 & 13637
Documented on Fremont-built 13637
Documented on Atlanta-built 13637
EE327-4275-L30Powerglide 
EH327-4250-L73Manual-3/4 
EI327-4250-L73Powerglide 
EJ327-4250-L73Manual-3Heavy Duty Clutch/L73
EO327-4275-L30Manual-3Heavy Duty Clutch
EP327-4325-L79Manual-3/4Spcl High Perf
ES327-4325-L79Manual-3/4Spcl High Perf/Heavy Duty Clutch
396 ↓    
ED396-4325-L35Manual-3/4A.I.R.
EF396-4350-L34Manual-3/4A.I.R.
EG396-4375-L78Manual-3/4A.I.R./Spcl High Perf
EK396-4325-L35Powerglide 
EL396-4350-L34PowerglideA.I.R.
ET396-4325-L35TH-400 
EU396-4350-L34TH-400A.I.R.

A total of 82,845 6-cyl engines were installed; 39,762 230cid and 43,083 250cid engines.
A total of 381,824 8-cyl engines were installed; 245,032 307cid, 74,007 327cid, and 62,785 396cid engines.

The engine assembly date and ID suffix code as well as the partial VIN for all V8 engines is always stamped on the engine pad as shown here. To date, all L6 engines were stamped on a pad by the distributor.

All 350hp and 375hp, regardless of transmission, as well as 325hp manual transmission SS396 Chevelles, came equipped with A.I.R.; the 325hp SS396 with an automatic did not have the A.I.R. system.

* EC engine code found on several KC-built 13680 El Caminos like the late January El Camino on the Chassis Broadcast Copy sheet and Malibu engine stamp shown here, at least 1 Fremont Malibu, and one Atlanta Malibu. The EE engine number was changed to EC due to a Powerglide cooler line clip being added to the pan rail.


So, if you have a documented 1968 327/275 w/Powerglide and an EC engine code, let me know the plant and VIN sequence so I can document it here and maybe solve issues for others.