Level 4 700R4 Transmission and Converter of Your Choice From 1600 to 2500 Stall. Level 4 700R4/4L60 FULL COMPETITION- Rated up to 750 HP! A 500 boost valve, 10 vane pump rotor. The reason we run a 10 vane pump rotor and not a 13 vane pump rotor is because the more vanes it has in it weakens the rotor.
