JB3 VS JC5

[arp]

What are the differences between the JC5 and JB3 gearbox? Could you change the jc5 internal gears using jb3 parts?

 

[MicKPM]

JCX boxes use a tapered roller bearing, to deal with the torque better. There's also some minor differences in seals between the two but the main difference is bearing types.

 

[arp]

so, the primary and secondary veins are different, right?

 

[MicKPM]

What are you trying to do?

 

[arp]

I have a primary and secondary gear ratio made for jb3, I wanted to apply it in jc5...