Passenger Car Engine Production Code Explanation

Chevrolet produced engines will be stamped with a source, production date and engine suffix. Other General Motors produced engines used in Chevrolet vehicles will use a label affixed to the engine assembly.


CHEVROLET ENGINE PRODUCTION CODE

EXAMPLE:


V 12 10 DWB

ENGINE MONTH DAY ENGINE
SOURCE PRODUCED PRODUCED CODE

K=GM of Canada 12th Month 10th Day Chevrolet
F=Flint Motor December 1.6L (98 CID)
T=Tonawanda L4
V=Flint Engine
M=GM of Mexico
A=Ramos - Mexico

ENGINE CODE LOCATIONS

L4 1.6L

The code is stamped on a pad on the right side of the engine below the number one cylinder parallel to the cylinder case deck.


L4 1.8L

The engine production code and partial VIN are stamped on a horizontal surface of the block just rearward of the water pump.


L4 2.5L

The code is on a sticker placed on the timing gear cover and is also stamped on the block, water pump end, just below the cylinder head. This is a two letter alpha code indicating engine type.


V6 2.8L

The code is stamped on a horizontal machined surface on the block just forward of the intake manifold.
V6 3.8L 231 CID (Front Mounted Distributor)

Located on the front face of the left rocker on a paper label.


V6 3.8L 229 CID (Rear Mounted Distributor)

Located on cylinder case pad immediately forward of the right cylinder head.


V8 5.7L 350 CID (Diesel)

The code is on a label located on rear face of left valve cover.


V8 5.0L and 5.7L

Located on cylinder case pad immediately forward of the right cylinder head.

NOTE: In addition, all passenger car engines (except 3.8L 231 CID) will have a portion of the vehicle identification number stamped near the engine production code, usually near the right hand side of the cylinder case. This condensed identification number consists of the division number, model year, assembly plant designation and vehicle build sequence number.


EXAMPLE:

1 D R 1 2 3 4 5 6


Chevrolet Model Assembly Vehicle
Passenger Year Plant Sequence
(VIN Pos. 3) Number

1983 PASSENGER ENGINE CODES:

1983 PASSENGER ENGINE CODES