Driveshaft angle for a CV rear shaft

[scrappy88]

I just put a 4" Tuff Country all spring lift (no blocks or shackle flip) on as well as swapped in a 14bff + 8 lug front conversion on my K5. My old driveshaft is so worn out not even new u-joints will fix it, so I'm going to run a CV shaft from High Angle.

I measured today how much I need to move the rear pinion up to point into the driveline. Using my cheapo harbor freight angle finder, I came out with exactly 90 degrees on the pinion, and 26 degrees on the driveshaft, so that means I would have to move the pinion up around 25 degrees ???? Does this sound right? Seems like an awful lot to me. If that's the case I'll be hacking off the spring perches very soon. Just wondering if I measured wrong or not before I go chopping stuff up with the angle grinder.

 

[BigCountryx]

The exact angles are not important when running a cv shaft. Your rear pinion should point directly a the tailshaft or output flange of your tc (maybe down a degree to compensate for slight axle wrap or torsion.) Your cv joint should be doing all of the work of relieving the angle. If you need more than a few degrees of correction to do this, rewelding perches would be best. Or you could use a shackle flip whith stock springs and your pinion should be just about right.

 

[FWP]

Mine pointed up about 30* from stock, I had to reweld new spring perches.

 

[scrappy88]

Ok I guess that's what I'll be doing then. It seemed like a lot to move the pinion up that far.

Did you have to reweld your shock mounts also since you rotated it so much?

 

[Roz]

i just did shackle flip and my shock hit a tiny bit at full flex. small dent in it now

 

[FWP]

No, but they do caress the axle tube a bit . Small dent, like what Roz said.

 

[Desert Rat]

http://www.pirate4x4.com/tech/billa...aft/index2.html

http://www.4x4wire.com/toyota/tech/driveline/

 

[pauly383]

No, but they do caress the axle tube a bit . Small dent, like what Roz said.

I have that shock upside down on the DD