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Old 04-29-2014, 05:47 PM
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clutch questions/opinions

Since I've installed my Hydra, the truck seems to slip in anything more than 50% throttle and the revs shoot up then it seems to catch gear when I let off so I'm assuming the clutch is the culprit. Next is what all do I need? Clutch and flywheel? Anything else? I've heard southbend is very good, but I'm a high school student so no $$$ haha, I've also heard good things about valair so I might go with them. I plan on one day putting stage 1s and maybe a d66 in the truck but way later so which clutch would you go with? The one rated to 400hp and 750lbs of torque seems fine for $400. But will it hold because I don't find dropping the trans very exciting thanks for any help! Also will driving like this be OK or will it further screw things up
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Old 04-29-2014, 06:10 PM
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What part # are you looking at?

I think you should get this one if getting a southbend

99-03 Power Stroke - 1944-6OKHD - 425 hp, 800 ft lbs of torque

Reason being, the 1939 series clutches require you to reuse your flywheel so it has to be surfaced. The 1944 clutches come in kits with everything you need. Also get an updated clutch fork. the 1939 clutches are also not very fun to DD, especially if lifted.

Don't bother replacing the hydraulics if yours are still good. It takes about 5 minutes to change them out anytime you need down the road.
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Old 04-29-2014, 06:44 PM
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Valair Heavy Duty Upgrade Clutch NMU70241-01
That'd the one I'm looking at. I can't justify spending $950 on a clutch plus I've gotta get it installed somehow
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Old 04-29-2014, 07:34 PM
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The one I linked runs around 600 ish but yeah.

There is nothing wrong with the one you link, just remember you have to add the cost of a flywheel resurface
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Old 04-29-2014, 07:37 PM
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What kind of places do that? Where can you find that one you linked for 600 because that might work
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Old 04-29-2014, 10:06 PM
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South Bend Dyna Max ZF6 Clutch Kits - Riffraff Diesel Performance
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Old 04-30-2014, 05:55 AM
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I don't see any clutch rated for 425hp and 800 lbs torque. Are you saying the 1944-60K? A valair plus new flywheel is at $660 already so I think I'm going to go SB, where can I buy an upgraded clutch fork and tell me they aren't pricey
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Old 04-30-2014, 06:15 AM
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I got mine at the deslership... I don't recall the cost but I don't remember being particularly disgusted by it lol
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Old 04-30-2014, 06:16 AM
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So a stock clutch fork will work? We're you referring to that clutch?
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Old 04-30-2014, 06:25 AM
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Yeah its just updated. Early clutch forks are prone to bending.

Actually the one I mentioned first costs more than I originally thought. The one you are asking about actually costs a little bit more than the valair if you buy the flywheel for the valair, about 60$.

But they are similar clutches, you can't go wrong with either the one you posted or the ones I linked. Riffraff is probably the best price too
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