My Dragon Datsun 521
Posted 25 January 2018 - 05:02 PM
Need a little help, I need to identify this transmission. I believe it is a FS5C71B.
The speedometer in Dragon reads too slow, by about 11 %, I think. The speedometer pinion currently in the transmission is a green one, 23 teeth, for a 4.875 rear axle. I think I need a 21 tooth purple gear, for a 4.375 rear axle. Part number for the pinion, 32703-86401.
Posted 26 January 2018 - 12:50 AM
I actually bought that transmission from a local Datsun dealer, in the 1970's. Nissan had only been putting five speed transmissions in Z-cars for a short while, I am not sure you could get a 620 truck with a five speed.
It was the lowest first gear ration five speed I could find.