Combo u-joint vs 7260 solid

[matthon]

So I have a 742 Sure-Grip with 3.23s and a driveshaft with new spicer 7260 u-joints, which are solid.
Original bb car with a 4 speed.

Going to swap in a 742 Sure-Grip with 3.91s with a 7290 yoke.

Combo u-joint would make it easy, but it's greasable, aka not solid, and I can't locate a solid one.

Am I better off swapping the pinion yoke and keeping the solid u-joint, or using the combo?

If swapping the yoke, it's not rocket science right, as long as both have the same spline, yes?

 

[rumblefish360]

How much power?
I haven’t found it to be a big deal. I take off each cap and pump grease until it comes out each hole and forget about it. I have 20+ year old U joints like this behind 450hp engines, auto and manual trans, 3.55 street duty and 4.10 street light warrior.

No issues yet.

Yes on the homes if you so decide.

 

[Darter6]

I'm running a 472 Hemi automatic with 4.10 gears using a 7260/7290 greasable .
Installed in 2004 and still in the car with many hard passes.4 speed, well I understand your concern. Just saying they work for me.

 

[SGBARRACUDA]

Since you are in possession of both yokes, I would swap them. 742 do not use a crush sleeve so that is not an issue. Just torque both to 240 ft lbs.

 

[yellow rose]

So I have a 742 Sure-Grip with 3.23s and a driveshaft with new spicer 7260 u-joints, which are solid.
Original bb car with a 4 speed.

Going to swap in a 742 Sure-Grip with 3.91s with a 7290 yoke.

Combo u-joint would make it easy, but it's greasable, aka not solid, and I can't locate a solid one.

Am I better off swapping the pinion yoke and keeping the solid u-joint, or using the combo?

If swapping the yoke, it's not rocket science right, as long as both have the same spline, yes?

Call Dr Diff, I think he has what you are looking for.

 

[matthon]

Dr Diff has what I'm looking for, unfortunately I don't have the dough. I called last week, he let me pick his brain and I got the gasket kit and u-joint, if needed just to get it moving.

It just doesn't make sense that you can't get a solid one. I'm kind of surprised the combo is taking the abuse, but what do I know, that's why I posted.

To take the yoke off and on my understanding is it helps to have it in the car.

I might just buy a small yoke, I'm weird like that, I like to keep stuff that works together so I can use it again without putting it back together or sourcing pieces.