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item
number
description*

VIN
1Z37J4S412839
The first digit, "1," indicated the Chevrolet division of GM.  The "Z" is the series, Corvette.  The "67" is the body style, convertible.  The fifth digit is the engine, J, correct for an 195hp car.  The sixth digit, "4," indicates the model year, 1974.  The "S" is the plant where the car was produced, St. Louis.  The last five digits are a sequence number so this is the 12,839th Corvette made for 1974.

Body Build Date
E21
"E" corresponds to December and "21" is the twenty first day of the month meaning this Corvette's body build date is December 21st, 1973.

Engine Code
V1212
"V" means the engine was build in the Flint, MI plant.  The "12" is the twelveth month of year and the "12" is the twelveth day of the month meaning the engine was assembled on December 12th, 1973.  This is correct as it precedes the build date of the car.

Suffix Code
CKZ
This means the motor was intended for a 1974 Corvette with a manual transmission, which is correct for this car.

Engine VIN Stamp
412839
The last 6 digits of the car's VIN, 412839, are stamped on the engine pad and pictured below, meaning this engine is original to this car.

Engine Block Casting Number
3970010
The engine block has the correct 3970010 casting number for a 1974 Corvette.

Engine Block Casting Date
L 11 3
"L" is December, "11" is the eleventh day of the month, and "3" is the last digit of the calendar year so the intake manifold was cast on December 19th, 1973.

Intake Manifold Casting Number
340261
The intake manifold has the correct 340261 casting number for a 1974 Corvette

Intake Manifold Casting Date
L 19 3
"L" is December, "19" is the ninteenth day of the month, and "3" is the last digit of the calendar year so the intake manifold was cast on December 19th, 1973.

Distributor
1112247
This distributor is correct and for a 74 corvette with a manual transmission with a 1112247 stamping

Distributor Date Code
3 K 27
"3" denotes the year, "K" denotes the month, and "27" is the twenty seventh day of the month meaning this distributor was made on November 27th, 1973

Carburetor
7044207
This carb is correct and original to this corvette with a 7044207 stamping.

Carburetor Date Code
3173
"317" denotes the day from January 1st, 1973, and "3" is the last digit of the calendar year meaning this carburetor was made on November 13th, 1973

Left Exhaust Manifold Casting Number
3932461
The exhaust manifold is original and correct for a Corvette with a manual transmission with a 3932461 stamping.

Right Exhaust Manifold Casting Number
3932461
The exhaust manifold is original and correct for a Corvette with a manual transmission with a 3932461 stamping.

Windshield
CU
"C" denotes the month November, and "U" denotes the year 1973, meaning this window was made in November 1973.

Driver's Window
YU
"Y" denotes the month October, and "U" denotes the year 1973, meaning this window was made in October 1973.

Passenger Window
YU
"Y" denotes the month October, and "U" denotes the year 1973, meaning this window was made in October 1973.

Rear Window
YU
"Y" denotes the month October, and "U" denotes the year 1973, meaning this window was made in October 1973.

exterior color code

22
Bright Blue Metallic

interior color code

404
Black

rpo code
description

1YZ37
Corvette Sport Coupe

A31
Power windows

C60
Air conditioning

J50
Power brakes

M21
4-Speed manual transmission

N41
Power steering

U69
AM/FM radio