Having issues getting a consistent interpretation of the VIN. The 2nd & 3rd digit seems to vary from site to site & decoder vs. decoder.

3 - Olds (same)
38 - for the 66', have seen interpreted as F-85, Cutlass & 442. Vehicle does not appear to have any 442 badges.
67 - convertible (am pretty confident about this part )
6 - 1966

Any thoughts or more definitive answer on the specific model? Appreciate the help.

 

3 - Oldsmobile
38 - Cutlass with V8 (38 is more often referred to as Cutlass Supreme though)
67 - Convertible
6 - 1966
? - What plant code?
123456 - Assembly line sequence

Here's some interesting information about your models standard and optional features.

 

Thanks for the options sheet. Will be interesting to read through.

Plant code = Z which seems to interpret to Fremont, CA.

 

As that 1966 SPECS guide shows, in the 1966 model year, the Cutlass Supreme was not a unique model line but simply an option on the Cutlass line, and only a four-door at that. As Allan correctly points out, for 1966, the "38" meant the Cutlass line (all of which came with V8s that year, the I6 was only offered in the F-85 and F-85 Deluxe model lines).

Note that this model lineup changed from year-to-year. During the mid-60s, Olds typically had three levels in the A-body line, the F-85, which was the bottom of the line, the F-85 Deluxe, which was the mid-range, and the Cutlass, which was the top. Each of these had unique model designators in the second and third positions of the VIN, 33/34 for the F-85, 35/36 for the F-85 Deluxe, and 38 for the Cutlass. The odd numbers (33 and 35) were six cylinder cars, the even numbers were V8s. The 442 was an option package available on all three V8 versions (this changed from model year to model year).

Interestingly, for 1967, Olds shifted model names. The 33/34 series stayed the F-85, the 35/36 series became the Cutlass, and the 38 series became the Cutlass Supreme. By the late 1960s the model lineup had expanded and the 442, Cutlass Supreme, and Vista Cruiser all became separate model lines with unique designators in the VIN. An interesting bit of trivia for the 1966 model year is that the Vista Cruiser was available as a bottom of the line F-85 (34xx model) or a top of the line Cutlass (38xx model). There was no middle ground. The 442 option, on the other hand, could have been ordered on any of the three model lines that year - though the next year it was only available on the Cutlass Supreme line.

 

Correct. The cowl tag may show BF instead though. Same thing, different terminology. The VIN was the final assembly line at Freemont. The cowl tag was Fisher Body Works at Freemont.

 

I have owned a 66 Cutlass that had the Cutlass Supreme emblem on the dash. It is a 66 emblem not a 67. The guy I bought it from swears it was always there never changed. For sure a Cutlass line and was a moderately optioned car. Had a split bench seat like a 67 but was for sure a 66 with no locking seat backs.

 

I have a 66 Toro parts car with

A70 Backrest, reclining strato bucket seat- for RH seat only. A81 recommended. Coupes and convertible.

Never saw that before.

Adding this info to the PN database

Note a typo in the RPO options for Cutlass:

A61 Trunk lid latch, power

"A Sixty One" is shown in an otherwise alphabetical list -after- A82, so A61 is out of place, whereas the Accessory Group Packages show this option as A91. Therefore A91 is more credible.

 

As shown in the SPECS page that Allan posted above, there was exactly one type of Cutlass Supreme offered by the factory in 1966. It was a 3839 body style - Cutlass Holiday Sedan (4dr hardtop), so if you ordered a four door hardtop in the Cutlass trim level (top of the line for 1966), it was automatically a Cutlass Supreme. If that emblem was on any other body style, it was not put there by the factory.