We towed a 7200 gvwr 26' 5th wheel trailer all over CO/NM/UT mountains and over many 10k+ passes with a new '84 carbureted 5.7 chevy 1500 chevy 195 hp. Power was down severally with the carburetor at those altitudes with engine blubering/engine shaking/low idle/etc.
Later a '90 chevy 5.7 TB engine with 215 hp with the same trailer. The TB 5.7 engine performance was much better/smoother performance idle at the higher passes.
Todays CPI engine don't have near the performance drop as those old carbureted engines.
You sure won't have any issues with the Hemi pulling that small TT in the mountains. Just slow down and enjoy the view. Oh.... and pull over once in a while to let those that drive faster go on down the road.
