I don't think there is a difference either. Now the driveshaft length may be different as an automatic is usually longer than the 4-speed - but I can't swear to it.Someone correct me if I'm mistaken, but I did this on my '66 and do not recall changing the yoke.
This was many years ago, so I looked through my files and found nothing in as far as invoice for such.
I don't think there is a difference either. Now the driveshaft length may be different as an automatic is usually longer than the 4-speed - but I can't swear to it.
I am replying to a very old link about slip yokes.....because I am now in the position of needing to replace the one that is worn....I have been in touch with all of the usual suspects, ie, Butler, Ames, OPGI, Year One, Carid.....online, phone & chat sessions.....the slip yoke that is being removed from my 1967 GTO HT / 400 / 4 speed does NOT HAVE THE GROOVES for snap rings and each of the part guys say "impossible".....all of the yokes have snap ring grooves.....well, I took close up photos of this slip yoke & sent to OPGI....heard nothing back yet....also sent my question to the GTOAA guy for 1967 year model.....he referenced a link that stated GM / Pontiac used a nylon injection in 1967, therefore, no snap rings provisions.....matters not to me....all I want to know is can a slip yoke with snap ring grooves, same measurements be installed if I procure it from one of the aforementioned classic parts providers? thanks!Trying find out the difference between slip yokes. Apparently the slip yoke for a two speed TH300 is half inch shorter than the slip yoke for 4 speed manual. Is that correct?
1966 GTO Convertible Automatic