i did 105 in a ranger one time and the back-end was so light that if i had to fart, i think that would have given me flight ('92 rangers with the 4.0L shut down at 105 MPH probably for this reason--i still had throttle to go, but the computer said no way, pal!) . without consideration for the lift created, it would be suicide to try. although the dodge ram is much heavier, it's also much bigger and therefore creates more lift since it's a function of wind and surface area.

i'm sure that its possible, but the wind would have to be diverted to keep it safely in contact with pavement.

 

I am going to have to retract my previous comment on this. After some deliberate abuse to my calculator and mathematical finagalling I have conclude that it is possible. The stretch though is how they define "turned up pump". With 35 inch tires, .70 overdrive and manual transmission, 3:54 gears and a governor spring that allows full power at 3400 rpm, it is possible. Providing, of course, that you can find the horsepower to move a box through the air at that speed without melting pistons .

 

Which is why I swear that these trucks need front air dams and rear spoilers.

But nooo, everybody says that it'd be pointless and I'd look stupid...

 

I did 138mph in a '98 Dodge Neon R/T with only a Mopar computer (increases HP and cuts out the speed limiter). I also did 145-150mph in an '87 Z-28 with basic mods and the smaller 305ci TPI motor.

The point is that most cars/trucks are faster top-end than people think. Having said that, I still don't see a 1st gen doing 140mph unless it has sick HP and maybe even an air dam to help with the drag. I definitely don't see one with 35" tires doing it due to the increased rolling mass, tread width, and increased vehicle height off the ground (more air going underneath slows you down big time).

I bet if you lightened and lowered a 4x2 1st gen and put a working air dam on it you could get close to 140mph with 400+HP.