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anybody know about what it would cost to swap a manual into a '81? I plan on a junkyard tranny and doing it myself. Would I have to change driveshafts?
 

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about as simple ass drilling some holes and mounting the other peddle set up and runing a clutch flued line other wise its a direct bolt in .. good luck im curentily doing this to my 73 im puting my 82 280zx trans in
 

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Sorta depends on how much you plan to buy new. You'll need the tranny, pedal assembly and (maybe) the driveshaft from the junkyard. You'll need the throwout arm and slave cylinder as well as linkage and console top (for shifter boot) as well. You'll no doubt want to rebuild both clutch and brake master cylinders as well as the slave cylinder. You'll want to buy a new clutch line (from master to slave cylinder), clutch and pressure plate, throwout bearing. Of course you'll want to make sure the driveline ujoints are good and that the driveline is balanced.
All said, I'd guess $5-600 unless you can find a pick & pull, then maybe $4-500.
Of course, that assumes rebuilt clutch and pressure plate, if you go new or high performance aftermarket, ad $1-200.
All this assumes that the tranny you buy is in excellent shape, syncros can be a problem. Rebuilding a 5 speed will, of course, increase you cost substantially.
Personally, I've not had good luck with junk yard trannys. They tend to sit in one place for some time and are not well cared for. If you do go that way, be sure to give the tranny a thorough inspection and, when you get it home and cleaned up, drain the old oil and replace with new.
Dan
 

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youll need the pedl assembly from a zx and you need to remove the spacer behind the auto flywheelor youll mess up your 5 spd very quickly i dont know if your driveshaft will mate up good luck and happy holidays
 

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I'm pretty sure the driveshaft is the same between manual and auto, unless you're switching turbo and non-turbo, or 2+2 and 2-seater. The turbo driveshaft is bigger around, and it might have different splines. The 2+2, I think, is longer. (I'd have to check my service manual to make sure of this, and it's not where I am.) Definitely open the tranny up, though, and check for any unpleasant surprises. I recommend draining the oil before you pull the tranny, if it's in the car still, since otherwise you'll have a bunch of oil coming out the hole in the rear.
 
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