GsxrMike
1/2 ton status
Sh;t man! Best of luck with your wife. My factory tach on my GSXR is pretty accurate past 90mph
. I guess thats a whole different story though.
. I guess thats a whole different story though.
. I guess thats a whole different story though.

It would take afterburnersMy stock 95 Impala did 130 with no problem, and I backed off because of a curve in the road. It has z rated tires from the factory, so maybe that is why there was no speed governer at that speed. High speed is not my thing, but I have heard LS1 camaros will do 150 ish.


My brothers 08 Mercedes CLK63 AMG stops accelerating at 185. That is set at the factory. Yes I had it there. Once. On an old military runway.



thanks for the wishes..i'm going to get some1 to ride w/me w/ a video camera and show ya'll that needle buried at 140, then stop and get out show ya the truck, but my plates full rite now, it'll be abit

Don't bother risking your life to show us how inaccurate your speedo is...
Here's a simpler way:
If the redline of your engine is 6000RPM, take the truck up to highway speed in top gear and then get the RPMs to 3000RPM (or 1/2 of whatever redline actually is).
Read the speedometer.
Your top speed (not accounting for massive wind drag) is going to be double whatever speed you are reading at 3000RPM.
"Double the RPM, Double the speed"....it's a simple mathematical truth, and you don't have to kill yourself to get the number.
Caveat:
If your speedometer is way off even at 3000RPM, your top speed will also be wrong.