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280ZX vs 280ZX 2+2 transmissions


7tooZ

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Other than then 82/83 turbo's that got that silly BW 5 speed, all the NA cars have the same transmission within their years. The ratios in the first couple of years are different than the later ratio's, most notably the over drive. 82-83 5 speeds are the sweet spot all around.

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4 hours ago, zKars said:

Other than then 82/83 turbo's that got that silly BW 5 speed, all the NA cars have the same transmission within their years. The ratios in the first couple of years are different than the later ratio's, most notably the over drive. 82-83 5 speeds are the sweet spot all around.

My understanding is that the percent variance between 79-80 and the 7/80- 6/83 is only 3%. Doesn't seem like, it would make a big enough difference in front of a 3.70 diff, to the extra cost to find one.

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1 hour ago, 7tooZ said:

My understanding is that the percent variance between 79-80 and the 7/80- 6/83 is only 3%. 

I think there are 3 different ones, with the later two being very similar other than the slight difference in the 5th ratio.

280 ZX (8/78-7/79) FS5W71B 
5 spd "B" type
3.321 2.077/37% 1.308/37% 1/24% 0.864/14% also 810 Maxima
280 ZX (8/79-6/80) FS5W71B 
5 spd "B" type
3.062 1.858/39% 1.308/30% 1/24% 0.773/23%  

280 ZX (7/80-6/83)

FS5W71B 
5 spd "B" type
3.062 1.858/39% 1.308/30% 1/24% 0.745/26%
 

 

1 hour ago, 7tooZ said:

Should still work with a 240 clutch and zx throw out, Correct?

I believe you use one clutch or the other. The throwout collar is different as well. 

You will need to address the shifter clearance at the tunnel opening. 

I am putting the same set up together myself. I just found a shifter that should work without having to trim anything out of the tunnel. I haven't tested it yet though. 

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I believe you use one clutch or the other. The throwout collar is different as well. 
You will need to address the shifter clearance at the tunnel opening. 
I am putting the same set up together myself. I just found a shifter that should work without having to trim anything out of the tunnel. I haven't tested it yet though. 

I would be interested in see what shifter you have found. Looks like I anger theZ out of storage on Tuesday and can get started on the conversion while Keating delivery of the trans.


Don's iPhone using Classic Zcar Club mobile
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I have a '79 2+2 transmission in my '72.  The ZX shifter wouldn't work with my console and boots. They are straight and my boots are angled toward the back. Some grinding of the '72 shifter worked for me. 

I put the 240 speedo cog in the ZX transmission, new oil seal around the speedo cable too.

I like it. 75 @2,200rpm.

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