U joints vs. pinion strength

Joined
Sep 8, 2005
Messages
97
Location
Dundee, OR
So I'm installing a Dana 300 in my 40, and and my head's spinning on what to do for driveshafts. I currently have 4 speed style shafts, and 79 axles with fine spline pinions. My original plan was to get some custom flanges from Tom Woods or High Angle for the T-case to mate up to the driveshafts. Now I'm starting to think I might just s***can that idea and get some domestic style junk yard shafts from a fullsize truck, since I might need a CV on the rear anyways.
So what I'm wondering is what u joint size, 1310,1330,1350, is comparable in strength to Cruiser fine spline pinions? I've been searching on the net and everything that involves 1350's is about 1/3 more expensive than 1310 or 1330. I can't really see as far as driveshafts go, paying more for 1350 stuff if the pinions are only so strong. What do you guys think?
 
Joined
Jan 22, 2003
Messages
8,121
Location
Kansastitty
Depends on which end you want to let go first. I would rather have the pinion end 'splode rather than the TC output end. It can become a polevault. So, I would use the weaker u joint on the pinion end. Just the opposite on the front.

JMO


Ed
 

Mace

rock scientist..
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Joined
Feb 17, 2002
Messages
21,462
Location
Las Vegas
I would use toyota stuff. Stronger than 1310 and more angularity..

Jesse at Highangle among others has D300 Toy flanges..
 
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