![]() Rear axle codes are located by the use of a stamp on the front right side of the differential carrier housing. Holley 3 x 2BC, K66 and Turbo hydra-matic Rochester Q-Jet, K66 and Turbo hydra-matic ZL1 Performance package L88 and Turbo hydra-matic ZL1 Performance package L88 and M22 4 speed Holley 3 x 2BC, Mechanical lifters, MA6 and 4 speed L89, L71 with Aluminum heads and Turbo hydra-matic Holley 3 x 2BC, Mechanical lifters and Turbo hydra-matic Holley 3 x 2BC, Mechanical lifters and 4 speed Holley 1 x 4 BC, L88 H-D and Turbo hydra-matic Rochester Q-Jet, Hydro lifters and Turbo hydra-matic Rochester Q-Jet, Hydro lifters and 4 speed Q-Jet, Special Cam, Air conditioning, K66 and 4 speed Rochester Q-Jet, Special Cam, Air conditioning and 4 speed This was followed by 3 or 4 numbers for the date of manufacture (1-12 for the month and then the day 1-31). F is the prefix used to designate the Flint manufacturing plant. The block also has a letter that indicates the month of casting (A-L for January to December)īeginning with this year continuous numbering of the engines was discontinued. ![]() The V-8 casting numbers are located on the right side of the block opposite the casting number. ![]() * Figures from service bulletin information.īlock casting numbers are located on the top left surface of the flange formed at the rear of the block for the flywheel attachment. The final serial number of the month is used to determine the month of production. The remaining numbers are the sequence production numbers. The 6th digit is a 9 and it is for the year. There were no coupes made during the T-Top years. The 4th and 5th numbers stand for convertible (67) or T-Top (37). The 1 stands for the Chevrolet Motor Division. 16,633 were Convertibles and 22,129 were T-Tops. There were 38,762 Corvettes made in 1969.
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