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snowbear 12-18-2014 04:50 PM

6B Suburban clutch
One overriding agreement that had to made before going manual tranny, Pati needs to be able to drive it comfortably. Stuff like ceramics are off the table.

I talked to South Bend for a while this morning and they are recommending a 13" single disk organic, HD clutch kit. I was really expecting them to recommend the street dual disk setup.

the rig, 96 burb, 6BT, NV5600, crawlbox, NP205, '05 F350 SD axles w/3.73, 37-39" tires. Est wt 8000# empty. I am not going to turn the pump up much. I will upgrade injectors. No plans for towing heavy loads.

I've read a bunch and there is a group that says stay away from single disks at all costs. Others that are more resonable, don't run'm if you are going to tow. And others that have no problems with them. Anyone here got experience and want to weigh in?

85toyflatbed 12-18-2014 05:47 PM

Re: 6B Suburban clutch
stock clutch would more than likely be just fine the nv5600 will be more of a work out shifting than the clutch.. I put a southbend single in my dads truck and it took along time to get smooth and is nice now. I have a dual disk in mine and it is great if the truck is loaded pulling 20k but empty and hooking up trailers sucks. it it a great clutch I have a lot of miles on mine all towing.

wasillashack 12-18-2014 06:36 PM

Re: 6B Suburban clutch
Curious why ceramics are not an option?

snowbear 12-18-2014 07:12 PM

Re: 6B Suburban clutch
Ceramics are like on / off switches. No easing into it.

wasillashack 12-18-2014 10:30 PM

Re: 6B Suburban clutch
Very true, had a 14" ceramic in the Babe Magnet, great thing about ceramic is you can overheat them and when they cool off the regain their grip. Never noticed the difference until I went back with a conventional clutch.

nate 12-19-2014 12:16 AM

Re: 6B Suburban clutch
It depends on the material. Ceramic Clutches are common on start/stop with heavy load stuff like garbage trucks, dump trucks, etc.

As for the best clutch to use, keep it local... talk to Alaska Clutch. The owner (Rich??) has probably forgotten more about clutches than everyone on this board but together knows.

84Shortbed 12-20-2014 04:05 PM

Re: 6B Suburban clutch
I would disagree with you on ceramic being on off switch. I would stick with a single disc definitely. You can get hybrid conventional/ceramic if your really worried about it. The cummins doesn't put out a lot of power. With some upgrades your looking at maybe 250 hp. Thst power is what most stock cummins put out now. As far as needing an upgrade you don't.. ceramic is the way to go IMO.

Next question. Why upgrade Injectors? Stock are good for 300 hp. You can get away with free mods to pump and notice a night / day difference with just 50-75 hp and still maintain good egts and fuel mileage.

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