Edelbrock Thunder Series AVS Off-Road Carb Features: Spring Loaded Needles/Seat Increase Performance New Qwik-Tune Adjustable Secondary Air Valve Distinctive Black Accented Hardware Lightweight Ball-Burnished Aluminum No Gaskets Below Fuel Level to Prevent Leakage Metering Rod/Step Up Springs Can Be Changed Easily GM/AMC-Style Throttle Linkage Height: 7.00 Width: 11.00 Length: 13.00 Weight: 9.00 lbs Vehicle Type: 2715 Fitment: 1989/GMC/V3500/Sierra Classic Standard Cab Pickup 2-Door/7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated::If Stock Air Cleaner Is Used Spacer PN[8092] Is Required~ If Stock Air Cleaner Is Used Banjo Fitting PN[8089] Is Required~ Models w/700R4 Automatic Overdrive Must Use Lokar Bracket PN[*****]~ Vehicles w/Turbo 350 Trans Must Use PN[8018] Cable Adapter~ Not For Computer Controlled Engines~ Not Legal For Sa...