Posted July 31, 200915 yr comment_290785 hi, im fixing a 260z and i was wondering wich transmision is better, i have the 4spd Link to comment https://www.classiczcars.com/forums/topic/32690-4spd-vs-5spd/ Share on other sites More sharing options...
July 31, 200915 yr comment_290788 79' ZX 5-speed has been nothing but Awesome in my 240Z. Great low end and 5th gear gets me Great MPG on the freeway. I basically do 2950 RPM's at 80MPH, which leaves a lot of pedal around 100MPHI'm sure a few other will give the specifics on what is needed for the conversion. (cross-member, driveline, etc.)Dave Link to comment https://www.classiczcars.com/forums/topic/32690-4spd-vs-5spd/#findComment-290788 Share on other sites More sharing options...
July 31, 200915 yr Author comment_290815 thanks dave, what do i need for this conversion? Link to comment https://www.classiczcars.com/forums/topic/32690-4spd-vs-5spd/#findComment-290815 Share on other sites More sharing options...
July 31, 200915 yr comment_290817 I think you need the driveline from the ZX and turn your stock crossmember back to front, (spin 180 degrees)I think, don't take my word for it, I was hoping others would chime in.Dave Link to comment https://www.classiczcars.com/forums/topic/32690-4spd-vs-5spd/#findComment-290817 Share on other sites More sharing options...
July 31, 200915 yr comment_290827 When I installed my 5-speed, it was a straight bolt-up. Used my original 240 driveshaft, all mounts, etc. and it worked fine (except for the fact that the 5-speed tranny needed a rebuild ). Wish I did that before I installed (then removed) it. I did use the shifter from the 5-speed instead of my original 4-speed shifter. I also think there are subtle difference in the TO bearings, but I'm not sure on that. Link to comment https://www.classiczcars.com/forums/topic/32690-4spd-vs-5spd/#findComment-290827 Share on other sites More sharing options...
July 31, 200915 yr comment_290845 hmm, so with the 5 speed bolt onto an 1974 260 automatic? Link to comment https://www.classiczcars.com/forums/topic/32690-4spd-vs-5spd/#findComment-290845 Share on other sites More sharing options...
July 31, 200915 yr comment_290847 Yes the 5 speed will mate to the motor from a 260 auto but you will need to add the entire clutch system to the car, use a flywheel from a manual and the starter might need to be changed too (not sure on the last one). The drive line might be the wrong length and the trans tunnel might have to be modified too (for the shifter to fit). I am not sure of all the mods I listed but they are just some things that come to mind when I picture the change over in my head. It is not nearly as straight forward as a 4-5 speed change. There are articles people have written about the swap on Hybridz.org and possible here too. It can be done though. Link to comment https://www.classiczcars.com/forums/topic/32690-4spd-vs-5spd/#findComment-290847 Share on other sites More sharing options...
July 31, 200915 yr Author comment_290866 then the 5spd is just plug&play ? Link to comment https://www.classiczcars.com/forums/topic/32690-4spd-vs-5spd/#findComment-290866 Share on other sites More sharing options...
July 31, 200915 yr comment_290869 then the 5spd is just plug&play ?Pretty much when you're going from a 4 speed manual to a 5 speed manual. Link to comment https://www.classiczcars.com/forums/topic/32690-4spd-vs-5spd/#findComment-290869 Share on other sites More sharing options...
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