Southbend clutch - Ford Powerstroke Diesel Forum
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Old 04-14-2014, 02:34 PM
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Southbend clutch

Was wondering which one im better off going with 1939CB HD Conversion Clutch Kit with a new oem flywheel or 1944-6OK SINGLE DISC CLUTCH KIT. I read that the 1939 holds up to more hp and torque but idk if i even need that much. I have intake and straight pipe with generic ts 6 position chip and its slipping when I get on it. Also what kind of material should I get for the clutch? Not really sure the benefits from one material to the other. I use the truck for work and towing but its also my daily driver. Any advice is appreciated thank you.
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Old 04-14-2014, 03:28 PM
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if i remember correctly a member on here named schlutzer has the 1939 and he isnt a fan of it.

he has been recommending the 1944.
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Old 04-14-2014, 03:35 PM
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The 1939CB is not a fun clutch to DD, heavier than stock pedal, very grabby, trying to drive slow is difficult and backing a trailer almost impossible.

The 1939 either needs your flywheel resurfaced or a new flywheel. So yeah its cheaper than the 1944 series clutches but by the time you buy a new flywheel or get yours resurfaced you aren't really saving any money.

South bend has clutches that hold the same power in the 1944OFEK, which are smooth and actually nixer to drive than stock IMO.

One good thing I can say about the 1939 is it shines in situations where you are trying to row the gears fast.
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Old 04-17-2014, 04:02 PM
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I ended up with a Valair clutch, but I spoke to South Bend just a few days ago and they have an 1939 HDO (heavy duty organic) clutch now that is not on their web site yet. It is a brand new clutch for them. Rated at 425HP/900Ft/lb torque. Seems like it was $649. You still used your factory flywheel. It is suppose to drive/engage very similar to a stock clutch and is great for towing. I paid $45 to have my flywheel resurfaced. I also know a trick to remove the alignment pins from the flywheel if you decide to go that route.

Last edited by Bill Kay; 04-17-2014 at 04:05 PM.
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Old 04-17-2014, 04:08 PM
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Quote:
Originally Posted by Bill Kay View Post
I ended up with a Valair clutch, but I spoke to South Bend just a few days ago and they have an 1939 HDO (heavy duty organic) clutch now that is not on their web site yet. It is a brand new clutch for them. Rated at 425HP/900Ft/lb torque. Seems like it was $649. You still used your factory flywheel. It is suppose to drive/engage very similar to a stock clutch and is great for towing. I paid $45 to have my flywheel resurfaced. I also know a trick to remove the alignment pins from the flywheel if you decide to go that route.
Good to know, I wonder if its usually similar technology to the HD series brought out with the 1944 clutches
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Old 04-20-2014, 10:27 PM
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Quote:
Originally Posted by bluestar View Post
Was wondering which one im better off going with 1939CB HD Conversion Clutch Kit with a new oem flywheel or 1944-6OK SINGLE DISC CLUTCH KIT. I read that the 1939 holds up to more hp and torque but idk if i even need that much. I have intake and straight pipe with generic ts 6 position chip and its slipping when I get on it. Also what kind of material should I get for the clutch? Not really sure the benefits from one material to the other. I use the truck for work and towing but its also my daily driver. Any advice is appreciated thank you.
I have a valair dual disk with organic facings and its super smooth and soft. For comfort, towing and DD, get an organic. The valair and southbend web sites both list all of there available clutch material types, there anticipated behavior and applications. IMHO dont get anything but a southbend or valair.
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Old 04-21-2014, 04:44 AM
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rock'n the stock hp Valair set-up here....im happy with it.
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Old 04-21-2014, 09:40 AM
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I have the southbend 1939 with the stock flywheel. I have no problems with it, daily drive, tow, offroad all works great.

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