Honestly, the few times I’ve found myself above 80 was merging from the on-ramps around here. Gets there pretty damn quick (3.6 8 spd auto 4.56)It's pretty damn easy to answer that question yourself, even if it'll take the 3.6 "a while" to get there.
I know for a fact that if you hit the 98mph governor in a 97 obs silverado something like 3x it’ll go past that 98mph governor. I’ve had my Silverado to 124mph racing up the grapevine many many many years ago!I have wondered but not seriously. I've been 80 on I-70 across Utah where the speed limit is 80, I don't intend to drive significantly faster than that.
I haven't hit top speed on any vehicle I've owned in over 40 years, prior to that I had a Datsun 1600 pickup that would barely break 70.
The manual shifter get the 3.6 up to top speed quickly from what I remember, that was a Sahara with Rubicon wheels.It's pretty damn easy to answer that question yourself, even if it'll take the 3.6 "a while" to get there.