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how to tell what year/type tranny i have?


Guest ON3GO

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Guest ON3GO

hey guys im trying to find out what year and type tranny i have. is there any way i can find out by numbers or etc?

its a n/a 280ZX (i think)...

so is there any way to find out?

thanks

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here's my list. i hope it helps for what it's worth :-D

 

 

YEAR 70-71 72-76 77-79 80 81-83 82-83 T

TYPE F4W71A F4W71B BW T-5

 

1ST 3.549 3.592 3.321 3.062 3.062 3.500

2ND 2.197 2.246 2.077 1.858 1.858 2.144

3RD 1.420 1.415 1.308 1.308 1.308 1.375

4TH 1.000 1.000 1.000 1.000 1.000 1.000

5TH N/A N/A 0.864 0.773 0.745 0.780

 

YEAR 84-86 T 87-89 T 84-89

TYPE BW T-5 FS5W71C

 

1ST 3.350 3.324 3.321

2ND 2.056 2.077 1.902

3RD 1.376 1.360 1.308

4TH 1.000 1.000 1.000

5TH 0.752 0.711 0.759

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Guest ON3GO

where are these numbers on the tranny case?

i cant find anything.

i wanna make sure its what it was told to me it as.

so if not i can get my money back.

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The only other solution I can think of is to check the gear ratios and then see what they match. As you probably know this can be done without pulling the box to bits, by engaging the various gears and comparing the number of output rotations of each compared with one (360 degree)rotation of the input shaft.

 

Then again, if you are really keen and want to inspect the internal condition of the box anyway, remove the front and rear gearbox casings. :)

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It's easy Mike. Put the transmission in first gear and then place a mark on the output shaft for reference. Spin the input shaft three full revolutions and check if the output shaft is back in its original position. If it is back the you have an 80-83 ZX N/A five speed.

 

The chart that j260z posted simply represents the number of revolutions you will need to spin the input shaft to get one revolution of the output shaft. If you notice all of the five speeds have a number less than one for fifth gear. This is your overdrive and is why your engine sees less RPM at highway speed.

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