Re: 24 and 26 spline C4 interchangability
My first post here, have been reading the forum A LOT. I'm in a similar situation to the initial post here but sticking with a standard 24 spline input shaft for my mild 66 mustang with C4. While getting the transmission back together seems like I'm having similar challenge getting the input shell to fully seat into the forward drum. all clutches are engaged fully. This quote has me intrigued about the sun gear / planet / differing parts in these early year c4's. Is there any more behind this with / without support bushing setup? This transmission may have never really been run (project was mid-stream from previous owner and he did some performance upgrades to the tranny) so maybe I have the wrong mix of parts leading to the assembly issues. I have new thrust washers throughout, they are stuck in place with assembly lube and I can tell all the thrust surfaces are making good contact though one part where the sun gear goes into the planetary there is that 3 piece race / needle bearing with a lip that should slip into the sun gear to locate that washer, can't tell how far that is seating in. My shell is seated about as much as the "bad" example above.
I'm so sorry to revive an old thread hear but similar problem.