Thanks! I went and looked at it more closely and it clearly doesn't go down any lower than it currently is. I have never actually used the AM radio... so maybe I'll install smaller antenna or cap. Thanks!That’s an optional antenna that comes with the push button am radio, just like I had on my new ‘67. As I recall it didn’t go down all the way but it should go pretty far down to the lower section at least....maybe 8” or 10”” above the quarter panel. But, I’m going from memory. Good for you as the rear antenna is so much better than the standard front antenna imo!
1967 Chevelle rear antenna...on my 67 SS, ordered with a AM/PB radio and rear manual antenna, came mounted on R rear 1/4 panel, was some where between 27 and 31 inches long COLLAPSED. This antenna was used for AM or AM/FM radios. Note 31 inches is the ideal length needed for a 1/4 wave FM reception antenna and GM used only 1 rear non-powered antenna to cover both aps. Best AM reception was with the antenna fully extended especially in "fringe" reception areas. The antenna shaft on my 67 was not round but oval, perhaps to minimize "drag". It sounds like you have the correct antenna..if oval in shape. You can google "optimum FM auto antenna length" for a further discussion, informative...FWIW
On 67 Chevelles:I stand corrected, according to Chevelle Stuff, the rear antenna was not available with FM or on station wagons...sorry. Only AM