Top speed can be altered by your gear ratio, here is where you 3.55 guys can shine, just takes longer to get there.

I have ran my SRT up to 110 (does not take long to get there), was fast enough in the truck. Basically whatever I can get up to in a 1/4 mile is the only top speed I will see (in the truck) and care about.

 

I have had mine up to 143 before (based off of GPS) steady as heck and plenty of pedal and RPM to go.

 

Had mine up to 105 mph one time, its just a truck so I do not try to race it that fast as its bad enouph trying to feed it driving normal.

 

I had my 2500 Ram Reg cab 5.7 up to 90 M.P.H
engine was not even close to the red line, To scary for me to push it even that far, long flat highway built up speed.
No 3/4 ton 4x4 should ever go that fast..

 

90? Dude, drive in the Philadelphia area... Drive less than 75 on I95 and you'll get shot at..

I've had my 06 over 115 twice.... never really felt like looking for max speed.. only went that far to get clear of some bangers that didn't agree with my right to blast out some Country at a red light.

My 03 passed 125 w/o a chip... per my GPS (speedo stopped at 120) was still pulling.

I don't speed... but have no issues with dropping the hammer if my surroundings dictate.

Fastest I've ever driven was 170 in Matt Dillon's Lambo quite a few years back... He chartered us, got quite the buzz on while fishing, and let us play afterwards... South Jersey roads are great to play on around 2 am..

 

South Jersey roads can be fun (I used to go Mustang head hunting in my Road Runner) but NJ state troopers can be quite the ****** (I know, I'm related to one...)