1967 marked the last year that Chevrolet would use a separate model number for the Impala Super Sport, something that they had been doing since 1963. Model numbers 16887 (Impala SS sport coupe) and 16867 (Impala SS convertible) were the only models the SS427 option was available on. If questioning the authenticity of a 1967 SS427, a person can at least prove it's a legitimate Impala Super Sport by checking out the information on the VIN. To prove beyond a doubt that the vehicle is an authentic SS427 however, documentation such as the build sheet would have to be available.
Below you will find detailed pictures that may be clicked on for a better look, as well as information on each photograph.
The front fender of the 1967 SS427 was decorated with a cross-flags 427 emblem that is unique to the SS427. Any of the full sized Chevrolets could be ordered with the same engine as the SS427, but when those cars were so equipped they received a "427 Turbo-Jet" emblem instead, shown to the far right. This emblem shown to the far right was installed on all 427 equipped full size Chevrolets except SS427.
. The lower body and rear quarter panel moldings were finished in black on all '67 Super Sports, and since the SS427 was a performance upgrade to the Super Sport, it too received this treatment. If you look closely at the above picture of the fender area, you can see this black strip that runs along the bottom edge of the vehicle, starting just behind the front wheel well.
The grille of the SS427 included blacked-out vertical grille bars, again the same as the standard Super Sport. Centered in the middle of the grille was a rather large and distinctive "SS427" emblem that let everyone know that this was not an ordinary Impala. The blacked-out treatment of the grille allowed this emblem to really stand out well.
The rear deck area of the SS427 also received special treatment. A small, blacked-out area running along the base of the trunk lid, accented by a chrome strip running through its center. Centered inside of this panel was another "SS427" emblem, just below the trunk keyhole. This emblem also stood out very well, announcing to all prospective tail-gaters that this was an Impala that meant business.
The picture above and to the right shows the "Chevrolet" emblem that was also installed on the trunk lid of the 1967 SS427. This emblem was the one spot on the body of a 1967 SS427 that you would have any indication that this was, in fact, a Chevrolet. It replaced the "Impala SS" emblem that a standard Super Sport would receive, keeping right in line with Chevrolet not putting the name "Impala" on the body of a 1967 SS427.
Probably the most identifying feature of the 1967 SS427 was its special domed hood that included three simulated air intakes. These intakes were finished in brushed-chrome, and quite probably were not originally designed simply to make the car look a little more serious. See below!
Found within the pages of the 1967 full-sized assembly manual is a canceled option for a tri-power setup on the Z-24 cars, identical to that found on a Corvette. That year, General Motors issued a corporation-wide mandate banning tri-power setups on all passenger vehicles. It is only natural to assume that Chevrolet's original plans for the SS427 in 1967 may have included an available tri-power configuration, and this special hood bears evidence of that. The three pictures above and to the right show some of the pages from the '67 assembly manual that featured this canceled option, known as RPO L-68 (same option code as the Corvette tri-power). The one to the far right even shows the Corvette-like tri-power air cleaner assembly.
One of the more interesting available options for the 1967 SS427 was the RPO D-96 accent stripes, which can be seen in the three pictures shown above. An extremely rare and unusual option, a mere 200 examples were ever delivered this way. There are debates as to whether or not this option was available on anything other than the SS427 and based on the literature I have read, it was an option available only to the Impala SS427. There are also debates as to whether or not these stripes were painted on by the factory or if they were a dealer installed item. A friend of mine who retired from the Janesville, WI General Motors plant is pretty sure such stripes would have been painted on at the factory. He painted these vehicles for over 40 years and is a real joy to talk to. According to this gentleman, not every dealership was equipped to handle cosmetic work and very few dealerships wanted to do more than what they felt necessary to deliver the vehicles to their new owners. However, just like any other types of debates over these vehicles, does anybody really know for sure? I sure don't, and I am not going to proclaim that I do. It is my belief, however, that the D-96 stripes were SS427 only and were painted on at the factory before delivery to the dealership.
Shown above is the elusive and mysterious code 4D. This is actually one of the "secrets" that I had been holding off showing on this site. I finally decided to share it as it appears to be a "secret" no more based on what I have seen in literature and on the Internet. On most authentic 1967 SS427 Impalas you will find this code on the cowl tag. Exactly what it indicated is never been confirmed, but many knowledgeable sources feel it was to indicate the special trim package that went on the Z-24 optioned cars.
Now as I stated, not all the Z-24 cars had this code on the cowl. I have seen legitimate 1967 SS427 Impalas that were built in the Los Angeles plant and in the Wilmington, Delaware plant that did not have this 4D code on the cowl. It is by no means an exclusive way of determining a vehicle's authenticity. There may have been other plants that did not use it as well.
One thing I have noticed is that all the owners I have met who own 1967 Z-24 optioned cars that have this code on the cowl have never been able to find the car's build sheet. Those Z-24 cars I have seen in which the owner does have a build sheet did not have this code on the cowl. Now that does not mean the cars with the code on the cowl were built without any documentation. It means that it just seems like the assembly plants which used the 4D code on the cowl did not seem to leave the build sheets behind in the finished vehicle. Again, just an observation, not a fact by any means. Hmmmm.......