Hey all, I'm going to be towing my first ever 8'x20' double axle (double 3500lb axles) trailer probably packed to the top with our house stuff. The trailer will be a pull behind and not a 5th wheel type. It will have electric brakes.
We are moving from Colorado to Washington state and will be hitting a few small and medium sized hills in Wyoming and Washington but my concern is the biggy; Cabbage Hill in Oregon.
I've got an '06 F350 6.0 Supercab longbed SRW with 97,000 miles on it. It's got the 3.73 rear but the tires currently on it are 265/70-17 (31"ish). The truck originally came with 275/70-18 and so the speedo is off. I suspect the smaller tires puts the rear gears at probably about a re-calc'd 3.83'ish. Cruise RPM's at an uncorrected 75mph (probably about 71mph corrected) is about 2100-2200.
The truck is currently stock (including tty head bolts) except for the blue spring mod and a PHP Atlas-40 FICM tune. Exhaust and intake are stock (for now but may not be by the time we move). I do have a ScanGauge-2 and Glowshift Fuel/Boost/Pyro gauge. And I have a coolant filter. Oh and I do have an SCT SF3 sitting here but I have not gotten any custom tunes for it yet and have not even installed the canned tunes on the truck.
My ECT/EOT delta on flat ground at 65mph is 5F. At 75-80mph it can get up to about 8F-10F. My normal ECT when OAT's are around 90 is 198-202. My EOT is 8F-10F above the ECT.
I've towed two ATV's with this truck before but those are light weight compared to the 8x20. However, coming up the mountains in Colorado with those two ATV's I was hitting 1200F quite a bit on the EGT gauge which seems high for such a light load.
And so I was wondering:
- What things should I check/inspect? (Tire pressures, hitch type, etc?)
- What things could I install performance wise to help the engine a little?
- And finally, how to attack Cabbage Hill without killing the engine or me and my wife?
My concerns are these:
1. Trailer weight and sway. Some spots have brutal crosswinds and Cabbage Hill is steep going up and coming down.
2. EGT getting way to high and cooking something.
3. EOT/ECT getting way to high.
Any and all input is definitely welcome!