Other than the underhood real estate the control unit occupies, which might affect spark plug changes "over the fender", it looks to me that you'd need to hole-saw the instrument panel metal to put the switch in a '65-'66 Chrysler. Perhaps just need the different instrument panel trim on the '67-'68 Chryslers?
When the Natl Speed Limit went to 55 in the earlier '70s, I did some investigating and it appears that the '74-style unit will work just fine. Just need to double the size of the slot for the turn signal level in that steering column housing. Adding the extra clearance for the new turn signal level on the forward side of the slot. Other than that, the basic dimensions for where things go appears to be almost exactly the same, as to putting it all together. Which given the two completely different body series, appeared to be an interesting situation!
Considering that back then, I'd almost never seen a factory cruise, outside of possibly on an Imperial, plus the "hole saw issue", adding a '74+ system seemed so easy and desirable. I went down to Fenner Tubbs in Lubbock and their tech confirmed how easy it would be on the '66, even marking the turn signal lever slot's needed enlargement for me. Never got it done, though. The neat thing I liked was that it could be done with a '74 Chrysler Accessories add-on kit.
The operational characteristics of the earlier system has roots in the early '60s, or prior. More involved to set and make work, but once you got it set, you could use the dial to change the speed, as I recall. I do remember the somewhat involved calibration method in the '66 FSM and how to alter the numbers on the dial to better coordinate with the speedometer reading, in the desired speed range.
Possibly "crude", but technically advanced for the time.
Glad we've got a member who can service them for us!
CBODY67
When the Natl Speed Limit went to 55 in the earlier '70s, I did some investigating and it appears that the '74-style unit will work just fine. Just need to double the size of the slot for the turn signal level in that steering column housing. Adding the extra clearance for the new turn signal level on the forward side of the slot. Other than that, the basic dimensions for where things go appears to be almost exactly the same, as to putting it all together. Which given the two completely different body series, appeared to be an interesting situation!
Considering that back then, I'd almost never seen a factory cruise, outside of possibly on an Imperial, plus the "hole saw issue", adding a '74+ system seemed so easy and desirable. I went down to Fenner Tubbs in Lubbock and their tech confirmed how easy it would be on the '66, even marking the turn signal lever slot's needed enlargement for me. Never got it done, though. The neat thing I liked was that it could be done with a '74 Chrysler Accessories add-on kit.
The operational characteristics of the earlier system has roots in the early '60s, or prior. More involved to set and make work, but once you got it set, you could use the dial to change the speed, as I recall. I do remember the somewhat involved calibration method in the '66 FSM and how to alter the numbers on the dial to better coordinate with the speedometer reading, in the desired speed range.
Possibly "crude", but technically advanced for the time.
Glad we've got a member who can service them for us!
CBODY67
Take a nap, read a book, day dream on the freeway. Great option!
