Thanks for clarifying, guys.

I've changed the 255 to 215 and 235, respectively for the V6 and GT, and added reverse since that was requested, as well.

There's now a bit more of a difference in speeds between the two - especially in 5th gear.

(For those that are interested, there's very little difference in reverse.)

Thanks, again, to all of those who helped maked these calculations possible. They've helped as I continue my personal V6 vs. GT decision.

Let me know if anyone is interested in an update based on the recommended shift points holderca1 posted.[/b][/quote]
You still have the aspect ratio listed as .5 on both tires - it should be .65 on the V6, and .55 on the GT. This works out to ~27.0" wheel diameter for the V6 and ~27.2" for the GT.

 

Thanks, bison.

Most of this is still new to me. Interesting. That Aspect Ratio change really brings the performance numbers must closer together.

The only exception looks like 4th gear where, at 2200 rpms anyway, the V6 is clearly moving faster than the GT.

 

Looks good!