2023 GM HD 505hp/1085tq

Bionic Man wrote:

blt2ski wrote:
My 300/600 dmax did ok pulling what I pulled. Max around 23-24,000 gcw.

We need that much HP/torque in class 3 and under truck because why?!?!?

I know I know

Testosterone!!!! ?? ?? ??

Marty

Spend some time out at elevation where the grades are steep and you might feel different. I would welcome more power than the 350/800 my truck has when pulling through the Rockies.

Your grades on interstates are no steeper than here in Wa St at sealevel. No more than 6%, except short bursts to 8%.

Want to talk local, try 25% grades! Yes you have elevation to deal with. 3% loss per 1000' if you have a non forced induction motor. Figured that out in 91 with a TBI 454 at 14K gcwr, 500 below ratings in yellowstone. Going 15-20 mph up the 10-15% grades in the park. Went back a few days after 9-11 with a 6.5TD, Less HP, but at 16K lbs, puling the SAME trailer. But my four kids were now adult sized teens instead of 6 months to 6 years. Pulled ALL the hills 20 mph faster! 4000 lbs over gcwr!

Reality, i doubt ALL that hp is hitting the pavement in todays motors. THe Auto transmissions need more HP to motovate a 10 sp vs the lder 3 spds. The NV4500 behind my 6.5TD only took 25-30hp vs 40+ for the 88 with the TH400. The original 5 sp Allison took 60-65HP to operate. Yes we are getting more HP to the ground. But also using more HP in drive train loss too.
i would have no issues pulling an RV thru the rockies with my 05 dmax that was a 320/620 in reality. My 185/385 6.5 was a lot better trip than my 235/385 TBI 454.

Marty