just a little more power

[noonenosthis1]

Hi all,
We have an 2015, F350, 6.2,srw, crew cab, 4x4. We tow a Flagstaff 2020 529RLKS, uvw 9631 lbs. We live in California, so just about anywhere you go, you go over a hill, mountain. I would like just a little more power going over the hills. Any ideas? Not getting a different truck, hubby likes this one. He has it set up for pheasant hunting. We live in California so I believe some of the tuners are not an option.

thanks

[valhalla360]

Before you muck around with a new rear-end, what gear are you running going up hills.
- If you are regularly in 1st gear struggling to do 20mph, the deeper rear-end might help boost the speed a bit.
- If you are typically running 3rd gear or higher, you likely won't see much improvement. It might hold a higher gear but engine RPM won't be much different for the same speed because while the higher transmission gear will lower RPM, the deeper rear-end will raise the RPM back up.

HP is what determines speed up a steep grade. HP = Torque * RPM. Gas engines are generally not designed to put out massive torque, so increasing RPM is how you generate lots of HP. Modern gas engines are quite happy running 3500, even 4000 RPM. It's just beyond what most people are used to so it feels uncomfortable.

Yes, in theory you could add a turbo but that comes with a whole set of complications that would be cheaper and more reliable to solve by buying a turbo diesel truck.

[BarabooBob]

Check the torque and HP charts for yourself. That engine does not start making any serious horsepower until it gets over 3500 rpms. Most people don't know how to downshift to get the horsepower that they need. Don't rely on the computer to shift, if you can, select the gear to keeps you in the power band. It will give you better performance and help with tranny and engine temps.

[jmtandem]

I would like just a little more power going over the hills.

A little more power? Get a diesel, you will have a lot more power.

[MFL]

You are not giving any gearing info, but a change to 4.30 gear set, if 3.73 now, will improve uphill towing. Even going down in tire/wheel size will help, if you are using 18" wheels, with tall tires. You should be able to find some 17" take offs.

I use non ethanol premium fuel, when towing heavy, which gives a little power, and mileage boost, compared to ethanol regular.

Jerry

[Grit_dog]

Gear it down more, or add a blower. Only 2 things with any bang for the buck, and the cost of either would make getting a stock diesel a better financial decision.
Although blown gassers are cool!