That depwnds on how fast you want to get to the top of the mountain. A 400 hp engine will get you to the top same as a 750 hp engine... Just takes a little longer to get there.
yes I'm really dont know why Volvo is going to passing me every time，bcs d13 is 50hp less than me. but my truck has speed limit on it，max 66mph…… I guessing you guys may picked up lot of speed before uphill？
It all depends on set up of truck, HP not really relative also there is other tricks to volvo like Performance mode and downshifting before the trans does on auto and you will be able to fly up the hill, depends what speed you want to cruise at, usually all mine are set up with 455hp and eco torque 3:08 rears and od trans cruise efficiently at about 68 to 70 but with a couple of tricks will fly up hills, top speed for fuel is about 72 once you pass that fuel economy goes out the window.
British Columbia only requires 425 hp to pull 140,000 lbs super b trains through the mountains. I did it with 450 hp. You’ll be fine at 80,000 lbs
