auto or stick?

[countryraised]

So I'm back to looking at buying a 6.4. And Actually found 1 with a manual. I really wish my 99 was a stick, and want to know how well do they do behind the 6.4? I personaly like driving stick and would assume the stick usually gets better mileage. I do a decent amount of haulling trailer, and want to know which one is going to hold up and do better? Also when I chip it how well will the clutch hold up to alittle fun here and there? thanks guys.

[p8ntballn2]

my buddy has an 08 with the 6 speed, he hates it when its in regen, he wont tune/delete it until july when his warranty is up. i keep telling him i dont want to hear him complain about how crappy it is when its in regen, if he wont delete it. I think once he deletes it in a few weeks, he'll be more happy. I think with mild tunes, you're clutch will be ok.. but depending on the mileage, and upgraded clutch prob wo uldn't be a bad idea.

[ThirdCoastStroker]

I have never drove a stick on a 6.4 but I can tell you I have hauled pretty heavy tractors and such with my auto tuned and never had a tranny problem at all, the new automatics blow the old ones out of the water for sure

[acelay]

I would not like this truck in stick, loved my 5 speed mustang though!

[110Dave]

Stock with the stick is so so. Tuned with deletes the truck is a pleasure to drive. I'll be doing a South Bend double disk this summer as the stock clutch with 120k miles can't handle my H&S hot damn tune.

[countryraised]

How well will the rest of the trans stand up to the hot tunes after you have a performance clutch?
Or Towing with tunes? I do load up pretty good my 99 with the empty GN trailer is 15k + load.
Sticks are hard to find and I might get the auto because the rest of the options are on the trucks.

[blackcloud2k]

I would love to have a hand shaker again! If you tow reasonably often I would get the hand shaker. These auto's are alot better than they used to be, but nothing beats a standard when towing. $1500 clutch, or a $5000 tranny when it does go. My stock auto lasted to 94k miles before it was done in my 6.4, my last 4r100 in my 7.3 lasted to 64k! The rest of the tranny behind a good dual disk will hold up. I tow heavy, and often but in the 6.4 I couldnt get the interior options I wanted with a standard. Hell the new 6.7's, you cant even get a hand shaker anymore, stupid move if you ask me.

[Diesel Addict]

The zf-6 trans is awesome. It will hold up to what ever kind of power you can put through it, put a dual disk clutch in and forget about it. I love mine, but its behind a 6.0.

[04hdfatboy]

Originally Posted by ThirdCoastStroker

I have never drove a stick on a 6.4 but I can tell you I have hauled pretty heavy tractors and such with my auto tuned and never had a tranny problem at all, the new automatics blow the old ones out of the water for sure

[colo_dually]

If you found a 6.4L with a ZF6, I'd probably jump on it. I would say that either transmission tows well now a days, however, the 5R110 is a beast of a towing automatic transmission (which is why it spanned 8 MY, and two engines). The newer 6R140 fills its one shortfall, the ability to select a gear manually like the Allison has had for so long. The manuals weren't selling (less than 5% of market, last figures I knew of), and by adjusting shift points in an auto you can fudge the emissions numbers a little bit.

Had the TowBoss package been available with the ZF6 on the 6.0L in '07, my rig would have had the manual. However, with everything that has happened, there are a lot more days I'm glad its an auto, then days I wish it was a stick.