item
number
description*

VIN
1Z8789S443790
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, 8, correct for an L48 car.  The sixth digit, "9," indicates the model year, 1979.  The "S" is the plant where the car was produced, St. Louis.  The last five digits are a sequence number so this is the 43,790th Corvette made for 1979.

Body Build Date
L16
"L" corresponds to July and "16" is the sixteenth day of the month meaning this Corvette's body build date is July 16th, 1979.

Engine Code
V0705
"V" means the engine was build in the Flint, MI plant.  The "07" is the seventh month of year and the "05" is the fifth day of the month meaning the engine was assembled on July 5th, 1979.  This is correct as it precedes the build date of the car.

Suffix Code
ZAH
This means the motor was intended for a 1979 L48 Corvette with an automatic transmission, which is correct for this car.

Engine VIN Stamp
443790
The last 6 digits of the car's VIN, 443790, are stamped on the engine pad and pictured below, meaning this engine is original to this car.

Engine Block Casting Number
8970010
The engine block has the correct 8970010 casting number for a 1979 Corvette.

Engine Block Casting Date
E 28 9
"E" is May, "28" is the twenty eighth day of the month, and "9" is the last digit of the calendar year so the engine block was cast on May 28th, 1979. 

Intake Manifold Casting Number
14007378
This intake manifold is correct and original for a 79 corvette with a 14007378 stamping.

Distributor
1103302
The distributor is original and correct for an L48 Corvette with an automatic transmission with a 1103302 stamping. This Number is specific to ZAH suffix which this car has.

Distributor Date Code
9 E 3
The "9" is the last digit of the calendar year, the "E" denotes May, and "3" is the third day of the month meaning the distributor was made on May 3rd, 1979. This is correct as it predates the assembly date of the engine.

Carburetor
17059216
This carburetor is correct and original for a 1979 L48 corvette with an auto transmission and A/C

Carburetor Date Code
1569
"156" is the 156th day from January 1st 1979, and "9" is the last digit of the calendar year meaning this carburetor was made on June 5th, 1979.

Transmission VIN Stamping
443790
The last 6 digits of the car's VIN, 443790, are stamped on the main case of the transmission and pictured below meaning this transmission is original to this car.

Transmission Main Case Casting Number
8640820
The transmission main case casting number is correct and original for a 77 corvette with an automatic transmission

Transmission Main Case Casting date
6-79 11
June 11th, 1979

Windshield
IA
"I" is June and "A" is 1979 so this window is original, made in June of 1979.  This is correct as it predates the build date of the car.

Drivers Window
IA
"I" is June and "A" is 1979 so this window is original, made in June of 1979.  This is correct as it predates the build date of the car.

Rear Window
IA
"I" is June and "A" is 1979 so this window is original, made in June of 1979.  This is correct as it predates the build date of the car.

rpo code
description

1YZ37
Corvette Sport Coupe

A31
Power Windows

CC1
Removable Glass Roof Panels

C49
Rear Window Defogger

D35
Sport Mirrors

MX1
Automatic Transmission

N37
Tilt and Telescopic Steering Column

QGR
225/70R15 White Letter Tires

U58
AM-FM Radio, Stereo

U81
Dual Rear Speakers