item
number
description*

VIN
1Z87L8S433775
The first digit, "1," indicated the Chevrolet division of GM.  The "Z" is the series, Corvette.  The "87" is the body style, 2-door sport coupe.  The fifth digit is the engine, L, correct for an L48 car.  The sixth digit, "8," indicates the model year, 1978.  The "S" is the plant where the car was produced, St. Louis.  The last five digits are a sequence number so this is the 33,775th Corvette made for 1978.

Body Build Date
K07
"K" corresponds to July and "07" is the seventh day of the month meaning this Corvette's body build date is July 7th, 1978.

Engine Code
V0627
"V" means the engine was build in the Flint, MI plant.  The "06" is the sixth month of year and the "27" is the twenty seventh day of the month meaning the engine was assembled on June 27th, 1978.  This is correct as it precedes the build date of the car.

Suffix Code
CUT
This means the motor was intended for a 1978 Corvette with an automatic, which is correct for this car.

Engine VIN Stamp
433775
The last 6 digits of the car's VIN, 433775, 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 1978 Corvette.

Engine Block Casting Date
F 23 8
"F" is June, "23" is the twenty third day of the month, and "8" is the last digit of the calendar year so the engine block was cast on June 23rd, 1978. 

Intake Manifold Casting Number
346249
This intake manifold is correct and original for a 1978 corvette with a 346249 casting number

Intake Manifold Casting Date
F 23 8
"F" is June, "23" is the twenty third day of the month, and "8" is the last digit of the calendar year so the intake manifold was cast on June 23rd, 1978. 

Carburetor
17058206
The carburetor is correct and original for a 78 corvette with a 17058206 stamping.

Carburetor Date Code
1658
"165" denotes the day of the year, and "8" is the last digit of the calendar year, meaning this carburetor was made on June 14th, 1978

Transmission Main Case Casting Number
8640300
This main case casting number is correct for a 1978 corvette with a 8640300 stamping.

Transmission Main Case Casting Date
6-78 12
"6" denotes the month, "78" is the year, and "12" is the day of the month, meaning this transmission was cast on June 12th, 1978

Transmission VIN Stamping
433775
The last 6 digits of the car's VIN, 433775, are stamped on the transmission and pictured below, meaning this engine is original to this car.

exterior color code

13
Silver

7
Dark Gray

interior color code

12C
Oyster Cloth

rpo code
description

1YZ87
Corvette Sport Coupe

A31
Power Windows

CC1
Removable Glass Roof Panels

C49
Rear Window Defogger

C60
Air Conditioning

D35
Sport Mirrors

K30
Cruise Control

MX1
Automatic Transmission

NA5
Standard Emissions

N37
Tilt-Telescopic Steering Column

QBS
255/60R15 White Letter Tires

U58
AM-FM Stereo Radio

U81
Dual Rear Speakers

YJ8
Aluminum Wheels