366 - 454 Codes:   ED - IY

Legend: A.I.R. = Air Injection Reactor, HD = Heavy Duty, HDC = Heavy Duty Clutch, PG = Powerglide,  L89 = Aluminum Heads, MT = Manual Transmission, TH400 = Turbo Hydra-Matic 400 Transmission, TI = Transistor Ignition.

Platform is Chevelle unless otherwise noted B for passenger or Corvette.

(n/a = information not available) - [ Return to Engine Codes Index ]

Code Year CID HP Trans Platform/Comments
ED/EDH 1966 396 325 MT A, Holley
ED 1967-68 396 325 MT A
EF 1966 396 360 MT A, Holley
EF 1967 396 350 MT A
EF 1968 396 350 MT A, A.I.R.
EG 1966-67 396 375 MT A
EG 1968 396 375 MT A, A.I.R.
EH 1966-67 396 325 MT A, A.I.R.
EJ 1966 396 360 MT A, A.I.R.
EJ 1967 396 350 MT A, A.I.R.
EK 1966 396 325 PG A, Holley
EK 1967-68 396 325 PG A
EL 1966 396 360 PG A, Holley
EL 1967 396 350 PG A
EL 1968 396 350 PG A, A.I.R.
EM 1966-67 396 325 PG A, A.I.R.
EN 1966 396 360 PG A, Holley, A.I.R.
EN 1967 396 350 PG A, A.I.R.
ET 1967-68 396 325 TH400 A
EU 1967-68 396 350 TH400 A
EU 1968 396 350 TH400 A, A.I.R.
EV 1967 396 325 TH400 A, A.I.R.
EW 1967 396 350 TH400 A, A.I.R.
EX 1967 396 375 MT A, A.I.R.
IA 1965 396 325 MT B
IAH 1966 396 325 MT B, Holley
IAR 1966 396 325 MT B, Rochester
IA 1967-68 396 325 MT B
IB 1966-67 396 325 MT B, A.I.R.
IB 1968 427 390 TH400 B, police
IC 1965 396 325 MT B, TI
IC 1966-67 396 325 PG B, A.I.R.
IC 1968 427 390 MT B, police
ID 1966 427 425 MT B
ID 1967 427 425 MT B, 11 built, no record of install
ID 1968 427 425 MT B
IE 1965 396 425 MT B
IE 1967 427 385 MT B, SS only
IE 1968 427 390 MT B
IF 1965 396 425 MT Corvette, TI
IF 1967 427 385 TH400 B, A.I.R., SS only
IF 1968 396 325 TH400 B, police
IG 1965 396 325 PG B
IG 1967-68 396 325 PG B
IGH 1966 396 325 PG B, Holley
IGR 1966 396 325 PG B, Rochester
IH 1966 427 390 MT B
IH 1967 427 385 MT B, except SS
IH 1968 427 390 MT B
II 1965 396 325 PG B, TI
II 1966 427 390 MT B, A.I.R.
II 1967 427 385 MT B, A.I.R., except SS
IJ 1966-68 427 390 TH400 B
IK 1966 427 425 MT Corvette
IK 1967 427 425 MT B, 11 built, no record of install
IK 1968 396 325 MT B, police, (3-speed)
IL 1966-68 427 390 MT Corvette
IM 1966-67 427 390 MT Corvette, A.I.R.
IM 1968 427 400 MT Corvette, Holley 3x2
IN 1966-67 396 325 TH400 B, A.I.R.
IN 1968 396 325 PG B, police
IO 1966 427 390 TH400 B, A.I.R.
IO 1967 427 385 TH400 B, A.I.R., except SS
IO 1968 427 400 TH400 Corvette, Holley 3x2
IP 1966 427 425 MT Corvette
IQ 1966-67 427 390 PG Corvette
IQ 1967 427 390 TH400 Corvette
IR 1966-67 427 390 PG Corvette, A.I.R.
IR 1968 427 435 MT Corvette, Holley 3x2
IS 1967 427 385 TH400 B, SS only
IS 1968 427 390 TH400 B
IT 1967 427 430 MT Corvette, Holley 3x2
IT 1967 427 435 MT Corvette, Holley 3x2
IU 1967 427 435 MT Corvette, Holley 3x2, L89
IU 1968 427 435 MT Corvette, L89
IV 1965 396 325 TH400 B, Rochester
IVH 1966 396 325 TH400 B, Holley
IVR 1966 396 325 TH400 B, Rochester
IV 1967-68 396 325 TH400 B
IW 1965 396 325 TH400 B, TI
IX 1965 396 375 MT Z16
IX 1967 427 385 MT B, A.I.R., SS only
IY 1965 396 375 MT COPO