Rhnmsf Posted May 10, 2007 Share Posted May 10, 2007 ok i have tried searching but i couldnt exactly find what i am looking for, i have a 78 280z with a great engine and tranny with only 60k miles, a new clutch, but the frame is bent.....so what i want to do is try and get a 240z with a bad engine and swap my l28 into it....what im wondering is what transmission is better? should i stick with the 240z 4 speed or swap it with my 5 speed.... this has been bugging me for a while and some advice would be great Thanks Ryan Quote Link to comment Share on other sites More sharing options...
GrayZee Posted May 10, 2007 Share Posted May 10, 2007 Depends on the gearing you want... this site will give you a idea of ratio's from one tranny to another. I believe the 4spd has a very low 1st gear. http://www.geocities.com/z_design_studio/ Quote Link to comment Share on other sites More sharing options...
BillZ260 Posted May 10, 2007 Share Posted May 10, 2007 I never really liked my 4 spd for the street, like GrayZee stated 1st was low and 4th kept the revs up on the highway. I have not driven a 5 speed I6 Z either. Is the S30 5spd a T-5? If so then it's very upgradable and can hold alot more power than the old 4. You can change the internal gearing etc. relitivly cheaply. Quote Link to comment Share on other sites More sharing options...
Challenger Posted May 10, 2007 Share Posted May 10, 2007 The T-5 was used in some of the ZX's. I believe the 5 speed he has is the 78 five speed. Im finding that I will probably put in my 82 5 speed to get alittle better mileage on the highway. Ill jsut have to get a little more power to keep the acceleration the same. Quote Link to comment Share on other sites More sharing options...
Rhnmsf Posted May 10, 2007 Author Share Posted May 10, 2007 yea i have the 78 5speed......and i feel that if i were to change the gearing i would screw something up......but after looking at the link that grayZee posted i think im going to try and get a 81-83 5speed.... Quote Link to comment Share on other sites More sharing options...
Zmanco Posted May 10, 2007 Share Posted May 10, 2007 I have an 82 5 speed and 4.11 and it's like having a close ratio box. But I'd only suggest the 4.11 if a) your engine makes useful power past 6k, and you like to shift a lot. If not, then I think a 3.9 might be better. Quote Link to comment Share on other sites More sharing options...
Challenger Posted May 10, 2007 Share Posted May 10, 2007 Im hoping to keep my 3.54 and my 82 5 speed so I have really long gears. Im hoping to do a turbo motor in the future and I think long gears and lots of torque would work good together. Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted May 10, 2007 Share Posted May 10, 2007 I hate the pre 80 5 speed with a passion! The RPM drop from 2nd to 3rd is killer going up the twisties! I blew mine up (going very very very fast) and now have a 4 speed. My MPG have gone down 5 mpg... I want to put in either the 240sx 5 speed or the late 5 speed. Also, the turbo T-5 is not a WC T-5, it's only marginally stronger then the Nissan unit and the built up gearsets are no longer available from what I hear... Mario Quote Link to comment Share on other sites More sharing options...
Rhnmsf Posted May 10, 2007 Author Share Posted May 10, 2007 ok so if i use a 81-83 tranny and the diff from my 78 will i be able to use the driveshaft from the 78 as well or will i have to get a different one? Quote Link to comment Share on other sites More sharing options...
GrayZee Posted May 10, 2007 Share Posted May 10, 2007 My experience has been that all that kind of stuff is interchangable. One thing I had a problem with is the clutch's release bearing (some have a longer or shorter neck) Just make sure the bearing matches the tranny you are using. Quote Link to comment Share on other sites More sharing options...
Rhnmsf Posted May 12, 2007 Author Share Posted May 12, 2007 probably a dumb question but.....does anyone know if there is a 6 speed that will work with the l28? Quote Link to comment Share on other sites More sharing options...
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