Marginally better? A DD is a whole new world over a single disc. I slip mine off the line @ 3700 rpm and come off the line at or around 60lbs of boost.
The clutch works ever time!

 

PH4tty...ok fill me then the clutch pads are the same other than mine will be a spring style with more manners the holding power should the same no, as your 3600 unsprung?

I am not sure about 40 psi lauches in my truck but if will holf yours it should hold mine, I just do not want what the fe does which is boosted lauched clutch spin with no grab even a fast shift will cause mine to slip when I am all the way in the pedal. What I am hearing from you is what I want.....

 

but aren't you running a huge pulling clutch the 3600 would be a far cry from that I would think? Or maybe I am wrong in my thinhking, the 3600 is the one of the smaller clutches in the DD line up.

I REALLY apreciate all the replies thank fellas iot is a large investment and I want to make sure I am bying the right product.

 

Far cry? The only difference is plate load. Mine is a 4200lb and has Feramic pucks. I have used the 3600, 3850 (twice) and now I am onto the 4200lb.
Every DD I have had from SBC has had the 48 puck setup (12 on each face).
I go with the 4200lb plate load for extra insurance that the clutch will not slip after I heat it up to a 1000 degrees while slipping to get the sled going.

Just keep in mind that any Dual Disc will not last forever... Every time you slip it under power you are taking material away from the pucks and over time and use they will eventually need to be replaced.
If you want to hot rod on a daily basis by slipping or doing burnouts you should probably consider a built auto. But the same thing applies to autos...the more you use the power the more they will need clutch pack replacement.

The old saying "pay to play"

 

For what you say you need, the 3250 will be great!!! There is no comparison to the biggest singe (FE) and the smallest double (3250). Pedal pressure is about the same but grabbing ability is not even close. I've drove three 3850's and one 4200. The 4200 would not hardly go into gear at all, but this was before it was an actual production unit. This has been nearly 4 years ago and I don't belive they actually sold it back then as a production unit. This one was a "test" unit and would NOT shift worth speaking of. You had to seriously stand on the pedal to get it down. It was in a buddy's pulling truck and he had to kill it to get it in gear, I know that's obviously changed since then but that's just my experience with the 4200. The three 3850's I drove were nothing alike. One drove/shifted great, another was decent, and the other horrible. All held whatever was thrown at them and two of them had a set of twins to hold. I have the 3600 and really like it but it is not as shifter friendly as the FE. I have a few hooks on it so far and several boosted launches with no trouble yet (knock on wood). I have a buddy with the 3250 that is very shifter friendly and he has 10-12 hooks on it if not more and is very hard on it on the street with no shifting or holding problems. I personally think you don't need more than the 3250, but that's just my .02.

 

what is the 3250 rated for vs the 3600?
I would really like to keep a close to stock shifting truck. I think I am going to call peter again monday morning to talk just to pick his rain again.

 

550-600 for the 3250 and 650 for the 3600's.

I believe my 3600 requires more effort than the clutch on a freightliner and will make my leg shake if I'm stuck in traffic for an hour Its also a pita to get into gear sometimes, but it has survived through a lot of abuse so far

 

I agree with phatty. my 3600 DD 6cb I daily drive. and I whoop its butt everyday. its a bit notchy into 1st and reverse. but I got used to it, I'm also on stock hydraulics with it. I plan to seld pull too, with more power. upgradeing in my future........probably. But works great as it is now.

 

first and reverse do not bother me but 2 to 3rd to 4th to 5th do, how are those shifts

overall I want to know if the DD will make the truck quicker being I can use new driving tecniques becasue the DD will allow boost lauches and WOT shifts... what would you guys say about that statement? I am planning on the upgraded hyd unit so pedal pressure should be minimal differnce from the fe with stock hyd. Shifting gears seems to be my only draw back from what i am reading, so how much worse will it be.

 

No, it works fine for me, but I don't dragrace/powershift it much either. I shift clutchless about half the time and rarely shift it even remotely quickly.


Chris

 

The 3600 is a little tougher to get in gear. I almost let a 350Z get past me because I couldn't get it in 5th quick enough. The 3250 will hold what you're wanting to do to it and will definately shift better. A lot of people just go ahead and get a bigger DD when they upgrade and never fool with the smaller one. IF you are not pulling, I would without a doubt get the 3250 because of the ease of shifting. I've drove them all and if you're going to go South Bend that's what I'd stick with. I would hate for you to get too big of a clutch that will do what you want on take off, but then slow down from shifting when you can get one that will do both. Again, just my .02.

 

so all the DD will take a boost launch even the smaller ones but the higher clamp load have more weight therefore slowing shifts, I may go the 3250 I will talk to peter and get his opinion again. By the sounds of things if I am not looking to pull the 3250 should take the hard launches and power shifting. Thanks alot guys I always like to here "real" world testimonals especially when shelling out 3 grand This truck will NEVER be a race truck but I am getting tired of laggy shifts and if I can keep more boost through shifts and leave with 10-20psi I will be much happier.

Jason

 

Thanks, I appreciate it. I doubt I need a clutch with that plate load anyway, but sometimes wish I'd gotten the 3850.

I'm thinking I'll be fine with the 3600 though, just need to leave with less boost. I think I've been leaving about 18-20 lbs. Probably need to get down to about 10-15 lbs.

 

I probably have some launches close to 40 lbs, but I'm 4x4 with 35" tires so the tires don't really spin, the clutch slips a little......we'll probably lower boost than that with the clutch slipping. When I was that high, I think I lit all 4 tires up....clutch was new then.

 

well I ordered the 3600 sprung, talked to peter he said the shifting issues are all over the board some guys say the 3850 shift like stock others say hard to shift, bottom line the 3600 will take more abuse than the 3250 so I went for longevity while playing

Thanks for all the help!