Just out 3:73:1 rear gears in my car and with the speedo going to 120mph and me doing around 90 the car doesnt pass that speed and RPMs go down to nothing then goes back to 4k again and repeats if i keep it floored. Is there a governor on a 87 IROCZ with a 350 (originally a 305 motor)

 

Bump.

Does anyone make tunes for 350 with rear gears or in general performance tunes