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5spd d/r's are 3.90....right?


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Adding onto what the Dr. says...

 

The part time 4WD turbo D/R's were only offered on the 85-86 RX, and could be special ordered on 85-86 turbo cars. So, if it's got a 3-position D/R lever and it's 87 or newer, it's 3.9.

 

Easiest way to tell- count axle splines.

 

3.7 D/R of any type = 25 spline axle stubs.

 

3.9 D/R of any type = 23 spline stubs.

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