I redlined 5th at around 140ish and let off, thats when the Porsche Cayman S pulled away.

 

Only for the cannonball.

I have a 4.10 now, but I had the stock 4.3 1.6l diff in the car before it blew up.

 

fm tells me that i can do 159.7mph (4.10:1 5 speed @ 7800rpm w/ 225/45/15). i think i will be able to get to about 140ish tops...

then again - anything past 120mph in miata is kind of scary :/

 

Thus far, 142.740 with the top down. With the distance limitation of the event and a hardtop, I should be able to see 150.

I am running the stock 5-spd with 3.63s on 205/45R16s, giving a computed 169 top speed at 7250 rpm. (175 at 7500.)

- L

 

on only 6psi i can have mine redlining in no time... speedo reads 130-135. i've only tried this once.

 

I should be able to do 165.1mph according to the FM calculator.