Yes I did mean propel sorry, I was in class at the time. And yes that happenes with a fully functional rev/speed limiter, it still kicks in you can hear it but the speedo just flies and pins itself to 6 o’clock. On a sidenote I did this without wheels and just lug nuts over the rotors on the back, I figured it’s safer than if having your car fall off the blocks and than try to launch itself. I wouldnt reccommend spinning your wheels that fast in the air, in case of a constructive vibration interference the springs might absorb it and something might randomly shake out of control on old cars such as 240s.