U joints

[66FBCharger]

Do you have a preference for what brand you put in your driveshaft? Do you use greasable or non greasable?

[toocheaptosmoke]

IMO it's hard to go wrong with Spicer.  As for greaseable vs. non, in a car driveshaft application I would probably go with non-greasable.   There is some debate over the strength of a u-joint with a grease fitting in the center of the cross, it can become a stress riser and point for failure depending on the design of the u-joint.  Another issue with greasable u-joints is the type of seal on the caps, they are generally not sealed as "tight" as a non-greasable unit.  This requires greaseable joints to actually be serviced on a regular basis, (most don't) and can cause premature failure.   On my 4x4 rigs that may see water immersion, I prefer a greasable joint to purge out any contaminents.  On a road car that hopefully never sees those conditions, regular sealed u-joints should be fine for years.

[Dino]

I grenaded mine a while ago, a Precision greasable which btw didn't fit without mods.  When this happened, all they had locally was another Precision brand without fitting so I gave it a shot.  Fit like a glove and so far so good on a street car.  Have to agree with toocheap though, can't go wrong with a non greasable Spicer.