exterior color code

13
Silver

7
Dark Grey

interior color code

192
Black

rpo code
description

1YZ87
Corvette Sport Coupe

A31
Power Windows

AU3
Power Door Locks

B2Z
Silver Anniversary Paint

C49
Rear Window Defogger

C60
Air Conditioning

D35
Sport Mirrors

L48
350ci V8 Engine

M21
4-Speed Manual Transmission

NA5
Standard Emissions

N37
Tilt-Telescopic Steering Column

QBS
255/60R15 White Letter Tires

UM2
AM-FM Stereo Radio with 8-Track

U81
Dual Rear Speaker

VK3
License Plate Mount

YJ8
Aluminum Wheels

ZX2
Convenience Group

item
number
description*

VIN
1Z87L8S432469
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 32,439th Corvette made for 1978.

Body Build Date
J27
"J" corresponds to June and "27" is the twenty seventh day of the month meaning this Corvette's body build date is June 27th, 1978.

Engine Code
V0612
"V" means the engine was build in the Flint, MI plant.  The "06" is the sixth month of year and the "12" is the twelveth day of the month meaning the engine was assembled on June 12th, 1978.  This is correct as it precedes the build date of the car.

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

Engine VIN Stamp
432469
The last 6 digits of the car's VIN, 432469, 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 5 8
"F" is June, "5" is the fifth day of the month, and "8" is the last digit of the calendar year so the engine block was cast on June 5th, 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
E 31 8
"E" is May, "31" is the thirty first day of the month, and "8" is the last digit of the calendar year so the intake manifold was cast on May 31st, 1978. 

Distributor
1103337
This Distributor is correct and original for a 78 corvette with a 1103337 stamping.

Distributor Date Code
8 E 4
"8" is the last digit of the calendar year, "E" denotes the month May, and "4" is the day of the month meaning this distributor was made May 4th, 1978.

Carburetor
17058204
The carburetor is correct and original for a 78 corvette with a 17058204 stamping.

Carburetor Date Code
188
"18" denotes the day of the year, and "8" is the last digit of the calendar year, meaning this carburetor was made on January 18th, 1978

Driver's Window
LJ
"L" is March and "J" is 1978 so this window is original, made in March of 1978.  This is correct as it predates the build date of the car.

Passenger Window
JJ
"J" is May and "J" is 1978 so this window is original, made in May of 1978.  This is correct as it predates the build date of the car.

Rear Window
NJ
"N" is January and "J" is 1978 so this window is original, made in January of 1978.  This is correct as it predates the build date of the car.