I know some of you guys know how to figure this stuff, so here goes.

3.73 gears, 4l65E tranny, 275/55R20 tires, in D (not overdrive) about 5500rpm (between 5500 and 5600) what would the speed be? I know it's over 120....

 

about 135, you can use the speed calculator at www.smokemup.com

 

thank you.

 

No problem, that speed calculator really comes in handy for me, I only have the 100 mph speedo, not that I would need one any higher...

 

Exactly