Zf6 rarity

[kb156]

if i recall, the zf-6 can only handle 650 ft llbs of torque.. which is like stock on a 6.4, so your lowest tune like stated above

 

[B585Ford]

if i recall, the zf-6 can only handle 650 ft llbs of torque.. which is like stock on a 6.4, so your lowest tune like stated above

Stock ZF6 or stock ZF6 clutch?

 

[Dieselfever]

There has been a lot more than 650 lb/ft put through one, that's just the factory rating. As for the stock clutch my brother has an 08 regular cab 6 speed and with the Mini Maxx on mild(80 hp) it will slip the clutch under heavy throttle

 

[12stroker]

I have 2 friends that have 6.4 6 speeds manual. Both are cclb duallys and 09

 

[dozer]

My stock clutch wasn't happy from day one after I deleted the dpf and a no power tune. I went with a SB DD 3250. No complaints at all. Holds strongs with mods in sig. Great street manners. Almost same pedal pressure as stock. Not much louder. Only time I really know its an aftermarket clutch is reverse up a hill or pushing a trailer, and WOT.

 

[Wemoy1]

Got a zf6 in my 08 its a xl regular cab. Manual windows and locks bench cloth seat. Put 1090 torque through my tranny and it loves it

 

[powerstroked08]

Put 1090 torque through my tranny and it loves it

This is almost signature worthy!:thumbsup:

 

[59fordcummins]

I've got a CCSB F-350 XLT, ZF-6, I've had south bends 550hp single, and it held great until I upgraded my turbos, so then I went with there 3250 Dual Friction Dual Disk, rated for 750hp and it started to slip after I broke it in properly, so South Bend upgraded my pressure plate to a 3600 for no charge, since my rig only makes roughly 675hp, my tranny is going back in later this week. As far as drive ability, I love it, if you didn't know it was stock you would be able to tell driving it, would recommend South Bend Clutch to anyone and everyone, awesome customer service, and great product.

 

[B585Ford]

I've got a CCSB F-350 XLT, ZF-6, I've had south bends 550hp single, and it held great until I upgraded my turbos, so then I went with there 3250 Dual Friction Dual Disk, rated for 750hp and it started to slip after I broke it in properly, so South Bend upgraded my pressure plate to a 3600 for no charge, since my rig only makes roughly 675hp, my tranny is going back in later this week. As far as drive ability, I love it, if you didn't know it was stock you would be able to tell driving it, would recommend South Bend Clutch to anyone and everyone, awesome customer service, and great product.

What are your mods?

 

[slowcoupe]

Another 08 ZF owner here. Picked up my 08 job 3 CCLB XLT with 44K on it about 2 weeks ago up in Boise, ID and drove it back home to Vegas. I couldn't be more happy.

 

[powerstroked08]

Congrats man! Enjoy the new ride:toast:

 

[powerlifter405]

if i recall, the zf-6 can only handle 650 ft llbs of torque.. which is like stock on a 6.4, so your lowest tune like stated above

The ZF-6 was once used in medium duty dump trucks applications and should handle significantly more than 650ftlbs. IIRC I was eye balling specs and I saw a F750 application w/ the cat and cummins were wall above the 650lb range and the ZF-6 was an option. I do wanna say there are several sled pullers w/ the Zf-6 and their 7.3, 6.0 and 6.4 are way beyond the 650 mark. I recall Dr. Speed being over 650 on his 7.3 and broke all sorts of cr@p but never a ZF-6.

My 7.3 6spd was fine until i ran the diablo race tune then the clutch began to slip.

 

[Dieselfever]

That could have been a larger 6 speed, like a ZF Meritor(formerly Rockwell)

 

[7.3powerstroke00]

Y'all have been talking about 650ftlbs tq on the zf6, last time I was on the dyno I put down over 1200ftlbs.... The dyno maxed at 1200 so couldn't tell exactly how high it went but here is tq printout from my run.
http://i1177.photobucket.com/albums...0-90E4-E47A60E3EB7F-2353-000003CAC0799B02.jpg

 

[powerstroked08]

What all do you have done to your truck for those numbers? Nice numbers by the way!

 

[7.3powerstroke00]

Cai, 4" turbo back, H&S hd300, Valair ceramic dual disc with billet flywheel.

It did 568hp which I think is a little low... The dyno doesn't load quite hard enough so it was only building 40-42lbs boost... On the street it will hit 52-54lbs...

 

[powerstroked08]

Nice! Im really hoping to put up some good torque as well once my build is done my goal is 1200# but i just might make more than that.

 

[B585Ford]

You should see that w/o too much trouble.

 

[powerstroked08]

Do you have MCC? Or just the "canned" hd300 tunes? I liked my 300 tunes but i didnt like the smoke so i messed with the file and now have a 300 thats smoke free.

 

[7.3powerstroke00]

What all is in your build plans?