I had the car up to 215 kph last night and it wasnt showing any signs of backing off. Is it possible that it isn't governed? The guy I was with swore that it would cut out at 160, he said most GM'* do.

Supercharged is 128mph or so, and N/A is 110mph. It'* due to the stock tires on the car, and liabilities, not what the engine can or can't do.

I say XXXmph or so because it varies on each car.

and I think that it also depends on what the speed rating of the tires were from the factory

i thought i read around 130 in a review a few years back, it doesn't take much to do 120, most sporty cars can do 130, can't remember when it really starts to get hard to go fast, but aerodynamics start to matter VERY quicky.

ive seen a chart before, anyone have it??

im governed at 140, 125 comes REAL quick, shifts to 4th then it still pull to 135 pretty easy, but the last 5 mph seem to take a llittle while....but i havn't been that dumb since my car was stock.

160kph? That'* about 99mph, and would be disappointing. Most GM TRUCKS are governed about there.

Hey, you hit 133 mph. What is the stock rating of your tires, is it Z? Mine were, and I've passed 130, also.

how fast is 215k?

my dads 2000 sierra cuts out at like 95 he said

133 MPH

Baron was talking MPH I believe.

you think he was going 215mph?? hmm i don't know about that

yeah gm trucks take no time to get to the governer!