Corvette Transmission Build - Slip Slidin' Away, Part II Photo Gallery
Another improvement GM made over the years was to increase the number of vanes in the pump. At the bottom right is the original seven-vane rotor from The Plague. Next to it is the upgraded 10-vane rotor, with the 13-vane unit on top. The additional vanes keep the line pressure stable and prevent the fluid from pulsing. Mike installed the 13-vane rotor.