Best clutch replacement?! - Dodge Cummins Diesel Forum
07.5 - 09 3rd Gen 6.7L Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine, Transmission, etc...NO ADVERTISING

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post #1 of 10 (permalink) Old 08-06-2019, 02:52 AM Thread Starter
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Best clutch replacement?!

Slipping at/above 2200 rpm on 2008 6.8 g56. Also wonder if lower reverse gearing is possible. Doing some limited heavy hauling and the only spot I can see where I am riding the clutch is backing up the trailer(4 horse with living quarters) on incline. Clutch was "dealer replaced" at purchase approx 2 years/20,000 miles ago.

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post #2 of 10 (permalink) Old 08-06-2019, 05:41 AM
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A lot have sworn by the Southbend DD3250.

2008 2500 HD 4x4 6.7 CTD 68RFE. 4:10 Gears. AFE Stage II W/PG7.
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post #3 of 10 (permalink) Old 08-15-2019, 02:03 PM
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If you’re only doing a tuner for mods and like the driveability of your stock clutch go with the southbend 3250 full organic dual disk. I just installed this in my truck and its amazing. Feels like a firmer, more solid stock clutch. No more slipping. I was slipping pretty bad on the stock clutch. I’m at 510hp and 950 ft lbs of torque.

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post #4 of 10 (permalink) Old 08-15-2019, 02:29 PM
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Valiar DD organic is another strong contender. As for lower reverse, your options are find a different trans with a lower reverse, lower you axle gears or install a free spin hub kit and use 4lo without locking in the hubs->2lo.

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post #5 of 10 (permalink) Old 08-15-2019, 03:20 PM
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Valair and South Bend are the "Best" 2 out there for you application. Give them a call and I'm sure they will be able to give you all of the info that you need to make an informed decision and possible purchase for your rig.

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post #6 of 10 (permalink) Old 10-08-2019, 12:55 PM
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I am definitely going with the SB DD but i can't decide on full organic or the hybrid. I am in traffic every day and although i don't back a trailer a ton, i'm afraid it is going to be too jumpy of i go with the hybrid.

2012 2500 ST 4x4 CCSB, G56. 5" exhaust. Other parts missing
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post #7 of 10 (permalink) Old 10-08-2019, 01:21 PM
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SB dd organic is smoother than the stock clutch it replaced. I had a dd ceramic a few years ago and hated the rough/jumpy engagement.

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post #8 of 10 (permalink) Old 10-08-2019, 03:01 PM
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If you want to save some coin, the HD organic from south bend is awesome and still holds an impressive 425/900. I think rated to tow 25K too. I have one in mine and it feels just like the stock. I think they're about half the price of the dual discs.

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post #9 of 10 (permalink) Old 12-18-2019, 01:39 AM Thread Starter
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Thank you!
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post #10 of 10 (permalink) Old 12-18-2019, 01:55 AM
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I think the free-spin hub kit would be a good investment. I use "2-lo" a lot for backing my gooseneck trailer up a steep driveway.

89 F250 Fummins - 92 12v, ARP head studs, P7100 pump, AFC mods, 3k governor spring, 7mm DVs, Mack rack plug, 5x14s, performance LP, hx35, 4" custom exhaust, Valair clutch kit, Zf5 trans, Autometer gauges
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