more power

pianotuna wrote:
Hi,

I'd have the transmission checked. It sounds as if it may be slipping more than it should. Are you using the tow haul setting.

WHAAAAAAAT:h:h

not in a hurry just wondering if it is suppose to be like that.
will pay attention to the RPMs and try that.

thought the tow/haul setting is for going up hills/mountains?

i am new to pulling a toad so all information is much appreciated.

Off line performance could be increased with a lower differential gear ratio.

With the Tow a Haul on. Trans will hold a lower gear longer from a start.
Personally. I only use the Tow Haul fir braking going down hill, and exiting the interstate.

I find off the line acceleration adequate at partial throttle (people move slowly here) and I have only one intermediate gear ratio to cover the 1-2 combination on your 5-speed Torqueshift.

If you are not flooring it off the line, you don't know what you can do with the power you have, and if you do anything low cost to increase peak power, you won't feel it off the line, you will feel it at the top of each gear, when RPM is 4000-5500 or so. And only at full throttle.

Your RV is a big truck, not a sports car. For a big truck, your C has a quite impressive power to weight ratio, but not on a par with modern cars, even economy cars, which might have 80-120 HP in sizes that used to do with 40-60 HP.

Posted in wrong area.

jdog wrote:
Since diesel class 3 are smog exempt in California, would it help to remove catalytic converter?

It's the 6.8L Ford V10 gas engine.

Seriously from all I've researched the biggest bang for the buck on the 3 valve V10 is custom tunes. Over on Ford Trucks there is a 6.8L V10 section and hours of reading on the huge improvement Mike's tunes provide. You have to weed through all the 2 valve posts as there's not much to gain by messing with the 3 valves intake or exhaust. Check out this thread and watch the video.

I'm in the process of selling my 2012 6.2L so I can purchase a low miles V10 F350 in the 2008-2010 era. I will have one of Mike's tuners in my suitcase when I fly out to the location of the new truck.

Jeff

Oh, and one more thing. All his tow/haul tunes have a version that locks out 5th gear when in tow/haul mode. Mike will even set it to lockout 5th until you reach a certain speed of your choosing. The biggest problem with the 5 speed is no way to manually select the 1:1 4th gear. With a gas engine pulling 20,000 lbs, unless your on flat level ground without head wind, there is no reason for overdrive.

Econoline does not get the three valve V-10.