Free: Contests & Raffles.
Stock 4" is good with deletes. If not that buy the cheapest one. My 05 has stock and a muffler but my kitty ran away. Muffler might too. The egt problem is timing/tuning fuel and the 9cm turbo. Heck I can run 1300egt on stock tune pulling heavy up pass with alot of throttle at 2500rpm. Our turbo is crap for towing. Its next on my list, not exhaust. (Twins? Hmm)
Really? Interesting, 6.7 cummins? The 6.7 turbo I read can adjust from 9cm to 25cm. What year truck? Stock? With no tune loaded bed and 27'TT loaded probably around? 8500lbs? 5 people, gross around 19k. Blewitt pass I layed her to the floor in direct drive stock tune and she ran around 1320egt at 35psi turbo. I then put edge on tow tune and had some extra power but egts ran mid 1350's. Put edge to 3 and could not hit her too hard, had to watch gauges but climbed just as well. Keep in mind Im running 70+mph doing this pushing alot wind at elevation. Love these cummins. 1300egt is normal max on stock truck these years. I will not pull at anything over 1350egt sustained and I shoot for less of course. EFI is best tunes by far but only for 06-up years.
You guys could just use the 6 speed stick instead of those $6k juice boxes. An Automatic IS a wear item. I can buy a lot of clutches for the price of ONE of your rebuilds.
1250 is good. If I could remember the link off a forum about Cummins testing their engine. They tested cummins under 100% load 24hours for looong run, months I think. (prolly had remote oiler) egts were mid 1300's and everything was tip top, bearings piston etc. So Cummins rating was 1300+egts. Heck the 2nd gen hx35 at 12cm tows great but moves air easier with lower drive pressure but its a 235hp system too. If you running efi your temps will be lower than mine for sure. Wish they would create efi for older 3rd gens. These trans can take more then people think. The boost launchs and racing etc is what kills em off. Gentle and roll into it helps out alot. TQ converter slip is first to go it seems but better safe than sorry. I have worked mine hard with tunes for 25k but smart about it. Oil and bands every 10k and still good shape at 125k total.