3 speed vs 4 speed driveshafts FJ40 (1 Viewer)

Joined
May 25, 2013
Messages
22
 
I have a 73 fj40 and I put a 2f with 4 speed trans in it. My question is what do I need in terms of drive shafts? Will the 3 speeds work? I'm not sure on this. Thanks
 
Joined
Jul 11, 2015
Messages
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Location
Las Vegas
 
You will have to shorten the rear and make the front longer. Also the flanges on the newer transfer case are made for larger driveshaft bolts. Might be good to get 4 speed shafts. Or you can put the old front output flange and park brake drum from your 3 speed t-case onto the 4 speed one. Just thought of this did you get a transfer case with the 4 speed, or did you use your existing 3 speed case?
 

Living in the Past

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Apr 21, 2005
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19,315
 
 
 
Are you using the original transfer case modified for the four speed or a four speed transfer case? Pattern changed and most likely different.
 
Joined
May 25, 2013
Messages
22
 
You will have to shorten the rear and make the front longer. Also the flanges on the newer transfer case are made for larger driveshaft bolts. Might be good to get 4 speed shafts. Or you can put the old front output flange and park brake drum from your 3 speed t-case onto the 4 speed one. Just thought of this did you get a transfer case with the 4 speed, or did you use your existing 3 speed case?
I got the transfer case too. Thanks
 

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