Last week we posted some blueprints of a prototype window shade (slats) with a spoiler incorporated into it. Rick Ochs, aka Guru, immediately sent off some additional related info in a comment to that article. He also forwarded a couple of images you might find informative.
To save you the effort of looking back for the comments here is the edited version.
These Drawings are plans for a built in spoiler for the Boss 429 Mustang program that would also be used on the Talladega and the Spoiler II’s. Ford was putting longer than stock front ends on the T’s & Spoiler II’s, re-rolling rocker panels and shoe horning 429 Shot Gun motors into the 69 1/2 and 70 Mustangs. The problem with this and the soon to be King Cobra (referred to in some Ford Motor Paper work as the 70 Talladega’s) is that the Fed’s were making Ford go to a lot of cost in crash testing, cooling test’s etc. to make sure they passed and met Fed’s requirements. one of the many tests Ford had to do on Talladegas, was test the rear view of the inside rear mirror from the driver’s view out the back window. This was also done on the 69 1/2 Boss 429 Mustang. The Spoiler II’s were exempt and also not crash tested as the floor pans were the same as the Talladega due to the same re-rolled rockers. Getting the Sport Slats on the cars was a real test for Ford thus the Spoiler Built in slats never made it into production.
The Sport Slats were also picked up by a few after market companies and sold by Speed Shops. If you study the pictures of the drawing dated 2-20-69 you will see by the Quarter lines, size of the deck lid that this is a drawing for the Mustang. (Note added by Editor: Rick is correct, however, the side image is that of a 1971 Mustang and not a 69/70; the Torino/Montego line was on a different design cycle from the Mustang. I suggest the Spoiler Slats were intended for the 70 Talladega/Spoiler II and 71 Boss 429 Mustang.). The Feds made Ford test these cars to the point that it became unreal for a Boss Mustang set at curb height at 24.38 inches from the ground to head light due to the heavier front springs required for the Boss 429. This was .38 inches higher than the 24.00 inch minimum.
Not only are the Talladegas and Spoiler IIs as well as the Boss 429 Mustangs and King Cobras and King Spoilers very special cars But Ford was put to the test in many areas to make them and sell them to the general public!
Rick maybe correct about the rear vision and built in spoiler conflict but I would also suggest that the special hardware required may have made these cost prohibitive for regular production line cars. If they were needed for the NASCAR homologation that is a different issue but we all know the racing efforts came to a stop in 69 so there would be no need for such an item. The bolt on wing/spoiler found on the Spoiler and Spoiler IIs was a far more cost effective solution.
Anyone else have addition information or comments?