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    Carburetor, Edelbrock, Thunder AVS Series, 800 CFM

    Vehicle Specific fits 20 models
    Part# CH25470
    This part has been discontinued
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    Carburetor, Edelbrock, Thunder AVS Series, 800 CFM

    The new Edelbrock “Thunder Series” AVS (Air Valve Secondary) are a leap ahead in carb performance. With the new “Qwik-Tune” adjustable secondary air valve, you can fine-tune the opening rate to match your engine's requirements. You can delay or speed-up the opening with just an adjustment without having to change any parts. Another outstanding feature is the dual-fuel inlet capability that helps prevent fuel starvation in corners and on hard launches. The front of the Thunder carbs have been CNC-machined and the throttle lever and adjustment hardware have black accents for a new, distinctive appearance. These powerful and dependable carbs are available in a 650 and 800 CFM capacity. Also available with Edelbrock's chrome-like EnduraShine finish. The perfect way to "top off" your engine!


    • NOTE1: These carburetors come with a 12-month limited warranty from Edelbrock. NOTE2: These high-performance items are not eligible for any further discounts or promotional pricing.
    WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

    Vehicle Fitment

    Make & Model Year Range Application Details
    Buick Grand National 82 800 CFM w/standard finish
    Buick Grand National 84-87 800 CFM w/standard finish
    Buick Regal 78-87 800 CFM w/standard finish
    Buick Riviera 63-76 manual choke
    Buick Skylark 61-72 800 CFM, w/standard finish
    Buick T-Type 83-87 800 CFM w/standard finish
    Cadillac DeVille 67-90 - Manual Choke
    Cadillac Eldorado 67-90 - Manual Choke
    Cadillac Fleetwood 67-90 - Manual Choke
    Chevrolet Chevelle 64-77 manual choke, w/standard finish
    Chevrolet El Camino 64-88 manual choke, w/standard finish
    Chevrolet Malibu 78-83 manual choke, w/standard finish
    Chevrolet Monte Carlo 70-88 (Manual Choke) with Standard Finish
    Oldsmobile Cutlass 61-77 800 CFM, w/standard finish
    Pontiac Bonneville 55-77 manual choke
    Pontiac Catalina 55-77 manual choke
    Pontiac Grand Prix 62-77 manual choke
    Pontiac GTO 61-74 square-bore, manual choke (non-EGR)
    Pontiac LeMans 61-74 square-bore, manual choke (non-EGR)
    Pontiac Tempest 61-74 square-bore, manual choke (non-EGR)
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