Tuning is giong too good!

[boostedyards86]

Well only one day of tuning and it seems its making some power. Truck with the old rail pressure booster was laying down 670wtq. Now no rail booster, and my initial tune the clutch gets real heavy in 5th and 6th and wont disengage. Looks like I'm in the market for a clutch. What are people running for fairly stock setups that DD and pull enclosed car trailers?

[DoghouseDiesel]

What?

[boostedyards86]

Just saying the clutch isn't happy with the new tune. Was wondering what other people are running for clutches. That is all. Thanks for any input.

[2007 5.9]

South Bend 3600 or 3850 depending on hp goals.

[dansdieselp]

Have a Valair dual disk 3800 sindered iron in mine now. We are a dealer for them. Drove one of their street triple disks the other day and it was very nice.

[boostedyards86]

Dan, how much of a change does it feel from stock? I am used to heavy clutches in my race car, but idk how it will be driving everyday. I keep hearing SB Dual Disks are very street friendly. But the Valair's seem to be a bit better money wise.

[dansdieselp]

Depends what style and pressure plate you get. My dual disk ceramic felt like my stock clutch did, but my current sindered iron clutch with the 3800 PP is hard to push in and is touchy, but that's the nature of a pulling clutch. The street triple was probably easier to push in then the stock clutch is and engages very smooth. I'd highly recommend it.

[DoghouseDiesel]

With only 670 ft/lbs to the wheels, you don't need anything more than a good single disk.

That's barely over stock HP levels and is WELL within the capabilities of any of the good single disks and lighter pressure plates.

No need for multi-disk clutches or heavy plates in this application.

[dansdieselp]

Only trucks we put singles in are stock trucks. With the price difference between a single and a dual only being a couple hundred bucks I'd rather have the extra insurance that I won't have to do it again since if they burn up the single they want it replaced under warranty for some reason.

[DoghouseDiesel]

Most of SB's singles are pretty well under rated compared to what they actually hold.

When a guy is looking at a clutch, he's gotta be realistic in what his plans and goals are for the truck, just like the rest of his upgrades.

For a truck making only 670 ft/lbs....anything more than a single disk with a 3250 pressure plate is just wear and tear on the drivers left leg.

If its a truck with a stock turbo and stock sticks and you don't foresee yourself doing otherwise, a single is just fine. You'll run out of turbo before running out of clutch.

[2007 5.9]

I've seen a OFE hold 600hp a few times...

[DoghouseDiesel]

I've seen a OFE hold 600hp a few times...

The OFE is one of the most common ones we install. That and the SDD32500 and SDD3600.

Those are the ones I normally use in the street trucks that don't need SFI flywheels.

I'll run the OFE's up to 450, the the 3250 up 550 and the 3600 up to about 750.