I just replaced a '79 5-speed with a '77 or '78, 5-speed, and this one allows the shifter to go from 5th directly into reverse. All of my previous transmissions, all later models, do not allow this motion.

Edited March 28, 201214 yr by cygnusx1

My ZX 5-speed had no lock-out.

Interesting. I could have sworn that my '79 had the lock-out. I am certain that the early 80's 200SX trans that I used to have had one.

Pretty sure it was a ZX and later thing, not sure what year though. My 80 transmission had it.

My mistake, my prior trans was a 1980 with the taller 5th gearing, good for building boost. That must be why it had the lockout; not the same as the S30 units. Apparently the 77-79 had none, and are the same transmissions. 80 is a unique tall 5th gear ratio with a lock-out, and 81-83 are different ratio with slightly shorter 5th gear, and the lock-out for reverse.

So I can stop wondering why the reverse lockout doesn't work in my 77-78 trans...

Edited March 29, 201214 yr by cygnusx1