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That's not true. A dual disc does not require a new shaft. Even if you have an 1 1/4" shaft that's in good condition you can order the clutch with the smaller hubs. It is important that the shaft is in good condition no matter what size it is.

99% of the time it's because the disc don't slide freely.

@mudrunner1 Thanks for answering, I appreciate it, now I can continue driving it like this or does that mean I installed it wrong?

@@MTBLOVERS32 not necessarily installed wrong, but something was not checked. Like I said more than likely the disc are not sliding freely on the input shaft. Could be wear on an old shaft or sharp edges on a new shaft and disc. Could be just annoying, or if it's bad or gets worse it could eventually glaze the disc over.

This one was organic. Unless you don't tow or just drive aggressive all the time there isn't really a reason to not get the organic.

Which ones, and what do you mean by "not wanting to tighten"?

I would never recommend a SB.

When I did my Cummins swap, I installed a South Bend heavy duty single disk that was rated for 950ft lbs of torque. My engine is making 605ft lbs at the crank. So I figured I am well withing the rating. Although my truck is very heavy ( 1983 Chevy 1 ton 4x4 dually, big flatbed, dual tanks ect.) The clutch never slipped, and I drive pretty conservatively and don't tow a lot. But within 15,000 miles the center hub of the friction disk was TOAST. It began to make so much noise and there was so much clunking when on or off the accelerator I hated to drive it. I pulled the trans and sure enough all the damping springs were loose and about to fall out, and the disk was VERY loose on the input shaft. You could grab the splined portion of the disk and wobble it around by hand. The friction material still looked brand new though. I ordered the Valair organic dual disk and I'll be installing it this weekend. Just having both the clutches side by side I have to say that the Valair looks to be much much better quality than the South bend. Especially the spring hubs on the disks. The South bend almost looks comical next to the Valair. Really disappointed in the South bend especially considering the money I paid for it. I'll never buy another one. I would NOT recommend the South bend. Maybe their dual disks are better quality than their singles, but I would go with the Valair.

@Bloodbain88 thanks for your input. I've been hearing exactly what you said a few times now. I'm going to go with the valair dual disk. Thanks a lot for your help.

Jesus $3500 for a clutch!? Or is that clutch installed with labor or did you do it yourself?

Sorry to hear it. I just pulled out a South bend single disk with only 15k miles on it where the friction disk spring hub is destroyed. Horrible quality, junk. I sprang for a Valair DD and it's worlds different than the South bend. Wish I'd have known about this first time around.

Weatherford, TX

Thanks for the feedback.