The motor really isn't the issue, it's whether the rest of the vehicle is designed for the higher speeds. You have to take into consideration the weight, brakes, tires, handling, aerodynamics, and the fact that these vehicles have a higher center of gravity than passenger cars and are therefore somewhat easier to roll.

Now understand, there is a '66 GTO in my past, and I have a 280ZX Turbo in the driveway right now. I've done my share of driving, autocrossing, etc. But bluntly, if you're not racing or driving in a way that's irresponsible and unsafe, there is no need to exceed 95 MPH. If you get into Montana or West Texas (been there) on a wide open road and want to see what it'll do one time, be my guest. After that, there's simply no need to drive that fast; hence, there is no logical reason for the manufacturer to set the governor to higher speeds. In fact, setting a higher limit in an SUV might expose a manufacturer to legal liability. It's easy to see a Blazer ain't a Corvette, and it doesn't need to go that fast.

It's like the man said: "When you play, you gotta pay." If you can't afford the engine rebuild, the hospital time, or the four-figure legal expenses, don't play that way.

 

I hit the governor just to do it...keep in mind my previous car was an SRT-4 in which I never went past 145mph (Im told with the mods I had it would top out at 161)

Im gonna do it the right way...DD the Blazer, and get a "play" car.