1988 GMC Sierra Top Speed?

[BigPIMPYY]

I have a 1988 GMC Sierra with a 5.7 liter 350 engine. it is not stock at all, 4" throttle body, performance fuel ignition, intake manifolds, cold air intake, and did i mention supercharged. it puts out about 585 horsepower. the truck is extremely light, emissions weight said 3255 pounds. I have gotten the truck to about 145 mph in 4th gear. it has 6th gear overdrive performance racing transmission. I was wondering what the top speed of the truck you think it would be.

 

[Molson02536]

I have a 1988 GMC Sierra with a 5.7 liter 350 engine. it is not stock at all, 4" throttle body, performance fuel ignition, intake manifolds, cold air intake, and did i mention supercharged. it puts out about 585 horsepower. the truck is extremely light, emissions weight said 3255 pounds. I have gotten the truck to about 145 mph in 4th gear. it has 6th gear overdrive performance racing transmission. I was wondering what the top speed of the truck you think it would be.

Need to know more information like your wheel diameter, final rear gear ratio, and what your engine rev limiter is set at. A good guess would be 180 mph tops to what you have given so far as to where your speed is at in your 4th gear.