1950-1966 [Subscribe to Daily Digest] |
Whether you need to change the spider gears or not when using the steel inner drivers depends on the vintage of your old tranny. What happened was that the shaft diameter was increased by 1.1 millimeters from 23.8mm to 24.9mm. The changeover took place sometime during 1962 - Saab service bulletins specify the changeover to have happened at transmission serial number 126655 (for the 3-speed boxes that is).
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