A fully rebuilt high performance valve body featuring improved lube flow and shift timing. Each valve body surface is lapped on our lapping table to ensure flatness and proper seal. Choose from stages 1-4 or our special Work Truck/RV calibration. Stage 1 is a soft shift progressing to Stage 4. Stage 4 is a hard shift and is recommended for use with higher stall torque converters. Valve bodies will hold 1st and 2nd gear positions at your command.