rear driveshaft

[phlyfish]

Just wondering if anyone running a SOA has not used a CV in the rear. I am swapping in a SM420 and the adapter clocks the t-case down, and I am also moving the axle back approx 4" by turning the springs end for end. Both of these help with angles so I was wondering if I still need to run a CV rear driveshaft?

 

[bad_religion_au]

if the pinion and the transfer case output shaft aren't at the same angle from vertical, then you need a CV otherwise you'l get vibes, but with a long enough shaft, and proper tcase/pinion angles you can probably get away with it

 

[Jetboy]

It's a lot easier to set up with a cv. just point the diff at the output (down 2-3degrees) and your set. also it can be cheeper to use a cv if you find a cv from the front of a toyota truck. you can cut the original shaft and add the cv which may give you enough length that you dont have to purchase a new tube. also do some measureing because you may be able to position your axle so that the truck driveshaft is the correct length without any mods. I purchased 2 front driveshafts complete from the local shop for $25 each. Most shops that lift trucks will have a few around. another advantage to the truck front shaft is the longer slip. the only downside is the smaller u-joints. I use them front and back on my lc with no problems.

 

[peesalot]

my soa on 36's with long shackles and lifted springs runs good with no cv. you should be fine with movin the axle back.

 

[phlyfish]

Hey Jetboy, I wouldn't mind at all putting in a CV, especially if I can't get one for that price. What year did you pull yours from and is it a bolt on with the flange of the 72' 40? Any input would be helpful. I may just go ahead and set output flange of tcase and input flange of axle to same angle and see what the angles on the u joint look like. I need to get it running cause the clutch on my DD is starting to slip. I need transportation to fix it.

 

[HI^C]

I run none cv shaft with no problems at all, just looked in the stock pile ran lengths i needed found one that works.

most early mini CV's just need to have the holes drilled out to a 10 mm (?) to work.

buy a angle finder? I pick them up for like $3 and purchased them for at least 5 buddies as i hate trying to guess the angles are ok or not.

 

[phlyfish]

Have an angle finder ($4 harbor freight) so setting is not an issue. I wouuld prefer to have the longer slip.

what years did you get your stuff off

 

[Isotel]

Phlyfish, My cruiser uses the Stock rear Driveshaft and i have no vibrations (Call it Luck)

I didint need longer splines or a CV... Give me a call or PM me if you need any help..
I also put a Square Shaft in the front and it works good