5 speed

[jzd14]

is a five speed from a 280zx a direct replacement for the 4 speed in a 240z or is there fudging that has to be done? thx

[RedNeckZ]

Yes, it will fit with out much work. Most of it is drop-in. Remember to get the drive shaft with the transmission. The four speed and five speed have different lenght to them and are not interchangeable. Other then that you may have to change the gear (for checking your road speed)(where the speedo cable goes into the transmission) inside the tranmission depending on modifications done to the car. Most of the normal Z sites have info on transmissions and the gear needed to make it run right. The color of the gear tells you how many teeth it has and by using the charts you can find the right one to run. I had to use a white one, because I have a 3:90 geared rearend and 15" tires. Check on the search engine and hopefully you should find all of the info you may need. Good Luck.

[Dan Baldwin]

A ZX drive shaft won't fit a 240Z diff.

When I installed my ZX 5-speed, I moved the

diff to the '72+ location (~1" aft), and used a '73 drive shaft and it fit fine. I think if you're not moving the diff, you can use the same drive shaft you've got now. As far as I know, the trannys ARE the same length.

 

The ZX 1st and 2nd gears are much taller than the Z's, so you may want shorter (numerically higher) diff gearing sometime soon. I ran mine with the 3.36 for a while, and with the 3.1's torque it wasn't a problem. O' course when I installed a 3.70 LSD, I got a big boost in off-the-line performance, though.

[Guest Fast Frog]

Z and ZX trannys are interchangable with the 240 but the Z and ZX clutches are not. The 240 alignment holes are different.