80 is not that bad from Sacto to Tahoe. Not as steep as other highways in California. We drive our rig in the sweet spot of the engine torque curve. We downshift and adjust our speed to match. We also have a transmission temperature gauge, and watch it as well. If the trans temps climb over 160 degrees we slow down, and turn on the trans cooler fan.
Always bring your A game.
1996 Flair 29V, 454 TBI, 4L80E