My buddy is setting up an 03 Dually. He uses his truck for his business and tows alot and very heavy 20+K lbs. What clutch should he get that will not be a pain to back up with, and still hold the power of the Smarty? He's also going to get a turbo. Is the Silver 62 a good towing turbo for the 6 Speed too?

The one in my sig, or a 3600. Could probably do a big single, but they get grabby.

He can get a good price and good service by contacting Lary at the DTR store.

Not sure on the turbo.

Do you know the part number? Does the SBC DD sprung hub work as well on the NV5600

tell him to get the coolers for the tranny also it will help and allow him to add a temp gauge to it. i pulled with a soutbend. cant remember which one think it was the one right above their lower end one

SBCDD3250


You'd have to contact Peter to get the best, latest info on the products.

http://www.southbendclutch.com/dd.html

Since he tows I don't see him running over 450hp pulling 20k, so I would say the SBC OFE would be great for him, it has a 3600 spring plate and has good shifting and clutch transition. It is a much better clutch over stock, and I've seen stockers last over 100k of hard use. If he insists DD the DD3250 will hold him well but locating gears becomes tricky when slowing down. As far as the turbo, I've hauled close to 17k recently and I found the turbo i have is great at pulling a load as long as you keep the rpms up. Pulling a load it is inevitable you are gonna use almost 100% of your throttle so boost shouldn't be an issue. Just make sure he is gonna have enough fuel and good programming to spool it as quick as possible.

I had a SB fe on my 03 NV5600 and it held until I stacked my Smarty and TST. It wouldn't hold so I went with a Valair DD3600 and it holds and shifts great. I had good luck with the Silver 62. It is a good towing turbo as long as you don't go crazy with fuel and stacking boxes. I've spent alot of money rebuilding my NV5600. Towing heavy in overdrive with stacked boxes can be very hard on a trans. They can be broken.
Good luck,
Topper

Im with Rip on this one.The SB con ofe is an excellent choice if he isn't going to go over the 500hp range.Mine is still holding,don't know the hp but I feel it is over 500.It has stock feel with alot more holding force.The DD3250 would be the next choice.

On turbo's I would say a 62/65/13 or 71/13 or 14.If towing is his only concern then the 62/65/12,13 or 14,if he wants a little more for playing the the 71/13.I have had both and if all I did was tow I would go back to the smaller exhaust wheel.

Thanks for all the inputs... what are these turbos set at from the vendor? 44psi? He's not going for all out HP, just better towing. Will he need studs?

Tell you the truth, if your buddy isn't going for big HP he might be better off finding a nice used turbo for the 600 series Cummins ('04.5-07). And can save some coins.

MikeyB

Best towing clutch I can think of is MINE! SBC Sprung DD 3250....
just grossed at around 32-35k this weekend and the clutch performed great!!

I've done the single disk thing, and getting one to hold a decent amount of power and be super smooth to tow is unattainable in my mind.... My single was grabby like crazy!

Sorry, not meaning to hijack, but I've got a clutch question too. Are the SBC DD 3250s loud at Idle? I've been looking at getting either that clutch or the DD Haisley street drag, and don't know which one to get. I heard the 3250 is slow shifting, and loud. I heard the Haisley is smooth fast shifting, pulls trailers great, and isn't loud, but it costs a lot more. I've been trying to make up my mind on the two for awhile, but I havn't really gotten any straight up facts to help me decide which one to get.

Sorry, not meaning to hijack, but I've got a clutch question too. Are the SBC DD 3250s loud at Idle? I've been looking at getting either that clutch or the DD Haisley street drag, and don't know which one to get. I heard the 3250 is slow shifting, and loud. I heard the Haisley is smooth fast shifting, pulls trailers great, and isn't loud, but it costs a lot more. I've been trying to make up my mind on the two for awhile, but I havn't really gotten any straight up facts to help me decide which one to get.


Well I imagine it is noisy, my OFE is noisy, you can hear it chattering in neutral over the idle. Bout like a rig. The 3250 will be great if you aren't in a hurry, it will probably pull better but its not absolutely needed. The FE will be a little bad backing up.

One of the reasons I say OFE is because he will also save some coin by not having to get the hydros or flywheel. In all honesty when I have to get a clutch again I will probably go with a DD3600

I don't mind a little noise, but I've heard some that just sound terrible and I don't want that. I'd like to have a quick, smooth shifting clutch that can hold the power cause I like to go to the track, but I also tow, so I dono. If the haisley is what they say it is, then it sounds like the best of both worlds, but not many people have anything to say about it so it worrys me dropping that much coin on it, without having any input on it, and just haisleys word that its what I want

Sorry, not meaning to hijack, but I've got a clutch question too. Are the SBC DD 3250s loud at Idle? I've been looking at getting either that clutch or the DD Haisley street drag, and don't know which one to get. I heard the 3250 is slow shifting, and loud. I heard the Haisley is smooth fast shifting, pulls trailers great, and isn't loud, but it costs a lot more. I've been trying to make up my mind on the two for awhile, but I havn't really gotten any straight up facts to help me decide which one to get.

Yes, its slow shifting and mine is only a little loud w/ the clutch pushed in. In neutral I cant here it above the engine. If I had the extra coin Id go w/ Haisley (which will be my next clutch) just for the fact I love to bang through the gears, and I hear that Haisley is extremely fast shifting for a DD.

Yes, its slow shifting and mine is only a little loud w/ the clutch pushed in. In neutral I cant here it above the engine. If I had the extra coin Id go w/ Haisley (which will be my next clutch) just for the fact I love to bang through the gears, and I hear that Haisley is extremely fast shifting for a DD.

Thats exactly what I've heard, and thats why I wanted it, just not many people have them to back that up. I like it cause it says its smooth and fast shifting, great for drag racing, and good for heavy towing. It should handle the HP I want too. I'm shooting for 600 or so

Sorry, not meaning to hijack, but I've got a clutch question too. Are the SBC DD 3250s loud at Idle? I've been looking at getting either that clutch or the DD Haisley street drag, and don't know which one to get. I heard the 3250 is slow shifting, and loud. I heard the Haisley is smooth fast shifting, pulls trailers great, and isn't loud, but it costs a lot more. I've been trying to make up my mind on the two for awhile, but I havn't really gotten any straight up facts to help me decide which one to get.

Yes, mine has some noise to it. Almost like a 2nd gen motor sounds. Like anything else though, I've gotten used to it.

I don't know how the Haisley (or Luk) could be much quieter, so long as it still have dual disks? I would also imagine that ANY DD is going to be slower shifting than a single, which of course we all know is considerable slower than an auto.......

Point being, if anyone is intending on building a race truck, the 6 speed is a bad starting point. At the same time (IMO) if you are looking to do a lot of pulling, the auto is not the best choice.

How much is the Haisley?

ofe for his applacation!!! everything else is overkill and a waste of $$$. ofe will hold 550+whp

Yes, mine has some noise to it. Almost like a 2nd gen motor sounds. Like anything else though, I've gotten used to it.

I don't know how the Haisley (or Luk) could be much quieter, so long as it still have dual disks? I would also imagine that ANY DD is going to be slower shifting than a single, which of course we all know is considerable slower than an auto.......

Point being, if anyone is intending on building a race truck, the 6 speed is a bad starting point. At the same time (IMO) if you are looking to do a lot of pulling, the auto is not the best choice.

How much is the Haisley?

Its over 2000, not sure exactly though. I'm not trying to build a race truck at all, but I enjoy going to the track and rowing through the gears. But I tow way more than I would go to the track. I miss my auto for the track part, but the 6spd is better for towing, and being a good reliable truck that doesn't require an empty bank account to have a tranny thatll hold your power. I'm just trying to decide if the haisley is worth about 8 hundred more than the SBC, or if I can just deal with the slow shifting and get used to it. Just how slow is it? I wish Willys would get on this one, cause I know he has the haisley I'm talking about

I wish Willys would get on this one, cause I know he has the haisley I'm talking about

It's pretty slow, not sure how to describe it, if you lived closer I'd let you take the truck for the day!

Seems like some gears are "notchier" than others, like it wants to wait to equalize longer or something.

Ok I got ya on the notchier gears, and the slow shifting.Kinda like driving one with a clutch thats going bad. See thats what I'm not wanting. If the haisley isn't like that, then I'll spend the extra on it. I'd love to drive trucks with both of em and see what I want, but I dont know anyone around here that has anything other than the ofe and the fe.