If I buy a new truck(6.7) am I gona have trani problem later on with the automatics, or is that issue fixed

 

billy my 08 tranny is holding up great. i run quite a bit of power and tow alot in the summer. i have 113k on the clock. you have to watch how you drive towing. if you need to talk give me a call.

 

Conversations and postings on various websites I get the idea that early 6.7 trannys had some issues depending on use. I have a late 2008 3500 with Amsoil tranny fluid which I changed out first thing. I have towed several loads back and forth from Seattle to Colorado over the divide and had only one incident of heat build up which I overcame very quickly. So is it just me or did the first batch come from a different source or supplier? or did they change something that might make them more reliable. I have a temp sensor and the Black Maxx monitors the tranny temp pretty reliably with no issues.

 

rail i think it has to do more on how they run the truck. i can make my converter slip any time i want too. i know i could trash my whole tranny the same way. the stock tranny will not take the high powered tuners turned up all the way very long.

 

Billy D, The 68rfe stock seems to be a decent trans so far when running a mild tune and what not. But as PAP said those trans will not take a beating for very long on the higher tunes with like the H&S and Smartys. One of the best things I would recommend to do for that trans is if you buy a H&S programmer i would recommend buying the trans tuning. It really seesm to help out those trans as well. Another thing to look at as well is the ATS Co Pilot for these trucks works great and helps them hold alot more power!

 

the thing i like about the overdrive from h&s is the fact it makes it dont let the truck lug around in higher gears. remember the max hp on the 6.7 is at 1650 rpms. death on trannys when using higher gears.

 

Exactly! Also since the smallest clutch packs in that trans are 5 and 6 and those are the ones that normally see the lower rpm's will cruising in town and under highway conditons. Unless you run in the manual mode

 

 

So far I have almost 58K on my truck, granted the only thing I did to it was put an S&B intake on it when the factory filter was ready to be changed... and so far it's great. Shifts are firm, no issues with it slipping, etc. I use the exhuast brake all the time, and manually downshift it getting off the highway, etc... no issues at all. Truck pulls the trailer with the race car in it no problems either.

No gauges to go by if it's getting hot... but I usually just keep it at about 60 to 65 when towing and I leave it in 5th gear as well, truck doesn't lug like that and it never downshifts once you're up to speed. Fuel economy isn't any worse doing that either when towing.. only thing it does, is stop the trans from having to down shift on the highway.