item
number
description*

VIN
1Z37L7S437732
The first digit, "1," indicated the Chevrolet division of GM.  The "Z" is the series, Corvette.  The "37" is the body style, 2-door sport coupe.  The fifth digit is the engine, L, correct for an L48 car.  The sixth digit, "7," indicates the model year, 1977.  The "S" is the plant where the car was produced, St. Louis.  The last five digits are a sequence number so this is the 37,732nd Corvette made for 1977.

Body Build Date
K06
"K" corresponds to June and "06" is the sixth day of the month meaning this Corvette's body build date is June 6th, 1977.

Engine Code
V0507
"V" means the engine was build in the Flint, MI plant.  The "05" is the fifth month of year and the "07" is the seventh day of the month meaning the engine was assembled on May 7th, 1977.  This is correct as it precedes the build date of the car.

Suffix Code
CKZ
This means the motor was intended for a L48 1977 Corvette with a manual transmission, which is correct for this car.

Engine VIN Stamp
437732
The last 6 digits of the car's VIN, 437732 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 1977 Corvette.

Engine Block Casting Date
E 4 7
"F" is May, "4" is the fourth day of the month, and "7" is the last digit of the calendar year so the engine block was cast on May 4th, 1977. 

Intake Manifold Casting Number
346249
The intake manifold is original and correct for a 77 Corvette with a manual transmission with a 346249 stamping.

Intake Manifold Casting Date
D 28 7
"D" is the month April, "28" is the twenty eighth day of the month, and "7" is the last digit of the calendar year, Meaning this intake manifold was casted on April 28th, 1977.

Distributor
1103256
The distributor is original and correct for a 77 Corvette with a manual transmission with a 1103256 stamping.

Distributor Date Code
7 F 4
The "7" is the last digit of the calendar year, the "F" denotes June, and "4" is the fourth day of the month meaning the distributor was made on June 4th, 1977. This is correct as it predates the assembly date of the engine.

Carburetor
17057203
This carburetor is correct and original for a L48 1977 corvette with a manual transmission

Carburetor Date Code
1477
"147" is the 147th day from January 1st 1977, and "7" is the last digit of the calendar year meaning this carburetor was made on May 27th, 1977.

Windshield
JG
"J" is May and "G" is 1977 so this window is original, made in May of 1977.  This is correct as it predates the build date of the car.

Driver's Window
JG
"J" is May and "G" is 1977 so this window is original, made in May of 1977.  This is correct as it predates the build date of the car.

Passenger  Window
LG
"L" is March and "G" is 1977 so this window is original, made in March of 1977.  This is correct as it predates the build date of the car.

Rear Window
JG
"J" is May and "G" is 1977 so this window is original, made in May of 1977.  This is correct as it predates the build date of the car.

Transmission Main Case Casting Number
1304065903
The Main case of the transmission has the correct 13-04-065-903 casting number for a manual transmission in 1977

Transmission Main Case Casting Date
4-21-77
"4" is the month, "21" is the day, and "77" is the year meaning this transmission was cast on April 21st, 1977

Transmission VIN Stamping
437732
The last 6 digits of the car's VIN, 437732 are stamped on the transmission and pictured below, meaning this engine is original to this car.

exterior color code

10
White

interior color code

192
Black

rpo code
description

1YZ87
Corvette Sport Coupe

D35
Sport Mirrors

J50
Power Brakes

L48
350ci V8 Engine

M21
4-Speed Manual Transmission

N37
Tilt-Telescopic Steering Column

N41
Power Steering

QRZ
White Letter Tires

U58
AM-FM Radio, Stereo