BlackSS wrote:
My truck weighs 8500 lbs and has the same toe / haul mode engine braking as the 350 dually. Why would I think I would have problems on a 6% grade? Only difference is the TV weight, and I don't know how significant that weight difference really is, 400 - 500 lbs tops?
Actually, not correct.
2011 and up F Series trucks, SRW, don't come with anything more than a 3.55 axle ratio.
My 350 Dually comes with 3.73 axle ratio.
F450's come with 4.30 axle ratios.
So, based on axle ratios, the engine RPM is totally different, therefore, tow/haul mode works different between the different trucks.