1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Driveshaft question T2-first gen rx7

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Old Nov 13, 2019 | 05:24 PM
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Driveshaft question T2-first gen rx7

Hello I was wondering if anyone would know off hand the details of the drive shaft that would fit a turbo 2 trans to a GSL rear end.

Spline count:
over all drive shaft length:
and rear end connector:

Thanks!
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Old Nov 13, 2019 | 05:51 PM
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From: omnipresent
Although im sure there are members that could quote the splines and flange sizes, this is one of those things where if for nothing else but your own peice of mind you will want to work it out yourself.
You literally need the fc yoke and the fb flange, the length will vary being a custom install.
If getting someone else to build it all they need to know is the year and model of the two cars, and the length from nose to snout which you will have to take with a tape measure at with the suspension at rest height.
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Old Nov 13, 2019 | 05:58 PM
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I was planning on getting a drive shaft shop so i guess ill figure out the length thanks.
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Old Nov 13, 2019 | 06:06 PM
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From: omnipresent
Contact the shop, they will let you know what they need to know
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Old Nov 14, 2019 | 11:14 AM
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I'm not sure if you are set on having a local shop build the shaft for you but mazdatrix does sell one to mate a turbo trans up to a 83-85 rear.

It's what I used when I swapped the TII trans in my GSL-SE.
https://www.mazdatrix.com/product/dr...smission-swap/
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Old Nov 14, 2019 | 02:27 PM
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^^^That. Takes all the guesswork out of it. I dropped my driveshaft off at the local driveshaft shop in early August.... still waiting.
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Old Nov 15, 2019 | 01:36 PM
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From: Napier
The yoke you're after is a Spicer 2603-25. You can use Mopar 7260 UJs with that.
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