4-speed to 5-speed

[jasonparuta]

I want to put a 81-83 ZX 5-speed in my 240Z. For now I will keep the same diff. I want to know if there are any incompatible parts, or can I just install the 5-speed with my existing driveline?

[texasz]

From what I recall reading all you have to do is slightly modify the area where the shift stick is (cut a little metal out) to accomodate the 5th gear. Other that that I believe that it's a drop in swap.

[jasonparuta]

Thanks, that's what I heard too. I just get that feeling I'll run in to some sort of trouble!:stupid:

[ZmeFly]

if you have a 72, if you do have a 70 or 71 what you could do and what i did was modify the shifter instead of cutting into my rust free Z:finger:

to me thats the only acceptable thing to do:love:

[Victor Laury]

On my 72, the 5 speed just fell in like it was made for the job.

No sheet metal was harmed during this operation.

[59ghia]

Just picked up a 5 speed out of an '81 from the wreckers. Question..... should I transfer my clutch arm and throw-out bearing from the 4-speed into the 5-speed box, or can I leave the 5-speed "stuff" in there? I know mixing and matching is a no-no but how about that throw-out bearing matching up to my pressure plate? And how about the slave cylinder? It looks like the box I got is freshly rebuilt (has a newer serial number inscribed and the oil was fresh along with the new slave and rubber hose)

Thanks,

Dave

[SER240Z]

The arm on the 4-speed should have a return spring on it that I don't think the 5-speed has. Unless you changed the slave cylinder along with the trans you may want to keep the one with the return spring. As far as the bearing and collar, I think it depends on the type of clutch you are using, but I'm not sure. I do know that the imput shaft for a 5-speed is longer than the 4-speed so you usually need the longer collar.

Hope this helps some.

[Tiburon]

Go with the adjustable shift fork.....and use the 5 speed's clutch setup....

now would be a good time to get the aluminum flyheel you have always wanted....

[LanceM]

Depends on the year of 240.

I just swapped an 81 5 speed into my 73, clutch arms are the same. Bearing carriers are different. If you are using a 240 clutch pressure plate switch the carrier from the 240 4 speed to the 5 speed, if you are going to install the pressure plate from a 280 then you need to keep the carrier from the 5 speed. The carrier from the 240 is shorter as the pressure plate is taller if you don't swap them you won't be able to engage the clutch. The 5 speed shifter also has a crappy spring loaded bushing in it, I swapped the shifter from the 4 to the 5 speed. Other than those items it was a bolt in with no tunnel cutting.