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If you're going to rebuild the engine then you will need to know this information.

1st Digit -Division-
3=Oldsmobile

2nd & 3rd Digits-Series-
31=F85 L6 (1968-71)
31=Cutlass L6 Coupe (1971)
32=F85 V8 (1968-71)
32=Cutlass V8 Coupe (1971)
33=F85 V6 or L6 (1965-67)
34=F85 V8 (1965-67)
34=Vista Cruiser Wagon (1966-67)
35=F85 Deluxe V6 or L6 (1965-66)
35=Cutlass L6 (1967-71) Includes (68-71)-
Cutlass "S" 6
36=F85 Deluxe V8 (1965-66)
36=Cutlass V8 (1967-71) Includes (68-71)-
Cutlass "S" V8
38=F85 Deluxe Vista Cruiser(Custom)-
(1965-66)
38=F85 Cutlass (1965-66)
38=Vista Cruiser Custom V8 (1966-67)
38=Cutlass Supreme V8 (1967)
42=Cutlass Supreme V8 (1968-71)
44=442 V8 (1968-71)
48=Custom Vista Cruiser V8 (1968-71)

6th Digit-Model Year-
5= 1965
6= 1966
7= 1967
8= 1968
9= 1969
0=1970
1= 1971

4th & 5th Digits -Body Code-
07= 2-door Club Sedan
17= 2-door Holiday Coupe
27= 2-door Club Sedan
35= 4-door Station Wagon
37= 2-door Holiday Coupe
39= 4-door Sedan
55= 4-door Vista Cruiser
56= 4-door Vista Cruiser
57= 2-door Coupe
65= 4-door Vista Cruiser
66= 4-door Vista Cruiser
67= 2-door Convertable
69= 4-door Sedan
77= 2-door Club Sedan
87= 2-door Holiday Coupe

7th Digit -Assembly Plant-
B=Baltimore, MD
E=Linden, NJ
G=Framington, MA
K=Kansas City, KS
M=Lansing, MI
R=Arlington, TX
Z=Fremont, CA
1=Oshawa,ON Canada

350 V8 2-bbl............................. TB,TD,TL................................C
350 V8 4-bbl ...................................TN.........................................C
455 V8 2-bbl ...............................UA,UB...........................................C
455 V8 4-bbl ...............................UN,UO......................................C
455 V8 2-bbl ............................UC,UD,UJ................................C
(low compression)

CODE LOCATION

A= Top of center exhaust port, left cylinder head.
B= Stamped on machined pad, front of right cylinder head.
C= Tape attached directly to front of oil fill tube.

Nothing like good information when ya need it...........see if any of this stuff helps ya!


The song playing is:I Got a Line on You by:Spirit

 

Since this is a web site's about my car then it would be appropriate to have the technical data on that particular car.
Listed below then is the Technical Data for my specific car. 1969 Oldsmobile Cutlass "S"

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Here are the details:.........................................................1968-69
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|******************* ENGINE IDENTIFICATION*******************|
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|--------Size--------|---------Production Code---------|-----Code Location-----|
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Below is a picture of how your VIN tag should look. It will help you to find out what you actually have got in your Oldsmobile. This information is a must to doing anything with your car.

 

The above tag can be found on models produced from 1967-1971. It will be located on the drivers side lower windshield on the dash. Look through the windshield from the outside and you should see it and be able to get the numbers off of it. Listed below are the break-down details on what the codes represent.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I wanted to include some useful information here to help in the process of Identification of specifications on the 1968-69 model year. See the box below for your appropriate specs.

 

Code Year CID Carb Hp/RPM Lbs.-Ft./RPM Code Loc. Notes
QN 68-69 350 4bbl 300@4800 390@3600 T 10:25:1 CR
QP 68-69 350 4bbl 310@4800 390@3200 T ----
QV 68-69 350 4bbl 310@4800 390@3200 T ----
QX 68-69 350 4bbl 325@5400 360@3600 T 10:5:1 CR "W-31"
TN 68-69 350 4bbl 310@4800 390@3600 B ----
QR 68-69 400 4bbl 325@4600 440@3000 T 10:5:1 CR
QS 68-69 400 4bbl 350@4800 440@3200 T 10:5:1 CR
QW 68-69 400 4bbl 360@5400 440@3600 T 10:5:1 CR
UN 68-69 455 4bbl 365@4600 510@300 B 10:25:1 CR
UO 68-69 455 4bbl 390@5000 500@3200 B 10:25:1 CR

The above specifications came out of all sorts of information that I have compiled over time. They are not my property, neither can I take credit for them. Chilton's, Haynes, and many other sources have been consulted to provide the data on display. Full credit is given to whoever it belongs; ultimately someone else!

This next image was borne out of the frustration with the clash between old technology and the new performance modifications that I made to the engine. I changed the old HEI ignition system and went with the Mallory Unitlite distributor and accessories. Here then are the changes that had to be made in order for it to function properly. Note: There is a protection device available by Mallory that is located between the distributor and the coil.That device will protect against unusual electrical surges that might occur thereby knocking out the $100.00 module in the distributor.

 

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