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V8 Engine Code Location

On 260" V8 engines a code tape is located on the oil dipstick tube. On 350" V8 engines number is located on left side of engine block, below front two spark plugs. On 455" V8 engines number is located on left side of engine block below rear two spark plugs.

Fig 1: 350" V8 ENGINE CODE LOCATION
G09354782Courtesy of GENERAL MOTORS COMPANY
Engine Code Displ. & Carb.
D 250" 6 Cyl. 1-Bbl.
AD 231" V6 2-Bbl.
QE, QJ, TE, TJ 260" V8 2-Bbl.
AB 350" V8 2-Bbl.
AM 350" V8 4-Bbl.
AF 455" V8 4-Bbl.
Fig 2: 455" V8 ENGINE CODE LOCATION
G09354783Courtesy of GENERAL MOTORS COMPANY