when i had my old setup. 30" stock tires 410s i at 6800rpms was around 138mph. it shifted into 4th and i think i let off around 141

this time around with the new 6speed and 488s im sure i can still hit tht speed and then some

 

With 33s and 4.10s that would put you at an actual 3.727 gear ratio, so it would be more like 153mph.

 

got clocked on the Dyno last Sat at 148MPH

My speed limter is set to 150.. couldnt go much higher.

 

Damn, that would be cool. I will take a GPS unit from work with me and try it again.

 

153 is calculated top speed so it will probably be a little less, be careful on those top speed runs

 

With my fat fingers I had my speed limiter set at 156. Scared the **** out of me one night when I hit it. Its now set at 135

 

I personally drove TAN327's RCSB 5.3 truck 148 mph after the 226 cam and bolt-ons. Truck had 3.73's and 29.5" tires. Heres the vid: http://video.performancetrucks.net/v...56008e62d8.htm

 

Ive gone 139 in my truck with 29" Toyo Proxes S/Ts with 3.42s Cant remember the RPMs
Just intake, exhaust, and sortof tuned.
So yea i would say a good bit faster with the right stuff.