Folks,
I have (3) 4 speed trannys that I'm trying make into one non crunchy one. The two in the photo below and the one that's currently in the car. The unit that's currently in the car is a little crunchy when downshifting from third to second and fourth to third unless i'm careful. The two below were sourced here on the forum, problem is they both are unknown condition. One of the units in the photo has coarse spline output shaft the other one has a fine spline shaft.
Other than the obvious, what's the difference between the two? Are they from different year cars? Is one considered a better choice than the other. The coarse unit also has a metal output seal cover but the fine spline unit has an aluminum output seal cover. Oh, they both have 4 bolt flanges. All things being equal, which one would you use?
Thanks