92mm Throttle Body - LS LS1 LS2 LS3 LS4 LS6 LS7 LSX. Work With Any 3 Bolt Intake Manifold (LS1, LS6, Truck Style) And 4 Bolt Throttle Body (LS2, LS3, LS7, L92, L99, L76). The Port Size Is 92mm On The Throttle Body Side And Tapers To Match The 75mm Port On The Intake Manifold.