As I posted earlier today, I am installing a tilt in my 13 July 67 coupe, which I would assume would be one of the later 67 systems? I have factory air with the two hose through apron canister under the hinge. You mention that the later 67's used a canister under the battery but on the tire side of the apron. Is that only applicable to air, tilt, AND speed control, with the speed control using the lower canister?
I corrected my earlier reply.. This whole canister ordeal certainly has many of us boggled but there is a certain pattern of results that indicate a few running changes. Very early cars tend to use the oblong canister alone unless speed control is present. without AC has different patterns so we will not include those patterns. Earlier, I said only one hose on the battery tray brace mounted canister used later in the year. That was incorrect, it would have two hoses.
I believe that if a 1967 car had both Factory A/C and Tilt, it only used one Vacuum Cannister ; the large oblong one that mounted on the rear inner Fender Apron. If not mentioned in this thread previously, I believe that there are others on just the Vacuum Reservoirs that support this.
Bob
Bob, this is true at least early in the year and through at least December 66 by findings. I think the added canister mounted under the battery tray (attached to the brace as Marty has pictured) began early in 67 like January to March time frame but I do not have the time frame pinned down yet.
We find early cars had no holes pre-punched in the battery tray brace but later cars do.