{"product_id":"condgreemee-1406-600-cfm-4-barrel-afb-style-carburetor-square-bore-electric-choke-two-step-metering","title":"condgreemee 1406 600 CFM 4-Barrel AFB-Style Carburetor — Square Bore, Electric Choke, Two-Step Metering","description":"\u003cp\u003e\u003cstrong\u003eCondgreemee 1406 is a 600 CFM, 4-barrel AFB-style square-bore carburetor built as a direct replacement for Performer-style manifolds and classic GM small-block applications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis aftermarket carburetor is designed to restore throttle response and drivability on V8 engines that accept a square-bore AFB pattern. It pairs a bottom-feed primary venturi booster and two-step metering rod system to smooth transitions between circuits, while non-adjustable electric-choke secondary air valves simplify plug-and-play replacement. The unit is new, ready to install, and intended for use on compatible intake manifolds and older, non-computer-controlled ignition systems.\u003c\/p\u003e\n\n\u003ch3\u003eWill this carburetor fit my engine and intake manifold?\u003c\/h3\u003e\n\n\u003cp\u003eThe Condgreemee 1406 is compatible with a wide range of Performer-style manifolds and similar square-bore AFB designs. It fits many Chevrolet, Ford, Mercury and GMC small-block swaps that accept a 4-barrel square-bore pattern, but it is not intended for late-model computer-controlled fuel systems.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFits Performer, Performer EPS, Performer RPM, RPM Air-Gap, Torker II and similar manifolds\u003c\/li\u003e\n  \u003cli\u003eCommonly used on vintage Silverado, Corvette, Mustang, Mercury and GMC pickups\u003c\/li\u003e\n  \u003cli\u003eNot compatible with GM vehicles using Q-Jet systems from 1981+ or AOD transmissions 1981+\u003c\/li\u003e\n  \u003cli\u003eCheck flange bolt pattern and throttle linkage geometry before installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the metering system affect performance?\u003c\/h3\u003e\n\n\u003cp\u003eThis carburetor uses two-step metering rods that help manage fuel delivery during transitions between idle, cruising, and part-throttle. The design reduces the chance of backfire during circuit changes and reduces stress on power valves by controlling fuel enrichment more predictably.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTwo-step metering rods for smoother circuit transition and tuning flexibility\u003c\/li\u003e\n  \u003cli\u003eBottom-feed primary venturi booster improves throttle response\u003c\/li\u003e\n  \u003cli\u003eNon-adjustable secondary air valves simplify setup while maintaining performance\u003c\/li\u003e\n  \u003cli\u003eRemovable metering rods let you fine‑tune jetting for specific engine needs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the box and what should I prepare for installation?\u003c\/h3\u003e\n\n\u003cp\u003eThe carburetor ships ready to install but does not include printed installation instructions. Expect the unit to arrive assembled like the product photos; you may need gaskets, throttle and kickdown linkage, and possibly minor tuning based on your engine and manifold combination.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePackaged carburetor as shown in product images (gaskets and hardware may not be included)\u003c\/li\u003e\n  \u003cli\u003eNo paper instructions—use reputable setup videos or factory service guides\u003c\/li\u003e\n  \u003cli\u003ePrepare new intake and carb gaskets, fuel line fittings, and correct throttle linkage\u003c\/li\u003e\n  \u003cli\u003eVerify compatibility with ignition timing and vacuum advance systems before running\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there limitations or vehicle exclusions I should know about?\u003c\/h3\u003e\n\n\u003cp\u003eYes—this carburetor is intended for older, non-computer-controlled applications and specific transmissions. It will not work with many late-model EFI or certain controlled-carburetor systems without significant modification.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNot for computer-controlled fuel systems or vehicles with factory Q-Jet from 1981 onward\u003c\/li\u003e\n  \u003cli\u003eNot recommended for AOD-equipped automatic transmissions from 1981 onward without proper calibration\u003c\/li\u003e\n  \u003cli\u003eRequires appropriate manifold bolt pattern, throttle geometry, and fuel pressure regulation\u003c\/li\u003e\n  \u003cli\u003eProfessional installation recommended if you are unsure about compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: car enthusiasts, restoration shops, and DIY mechanics rebuilding classic V8s who need a straightforward 600 CFM, 4-barrel square-bore replacement. If you drive a vintage Silverado, Corvette, Mustang, Mercury or GMC truck with a Performer-style intake and a non-computerized fuel\/ignition system, this Condgreemee carburetor offers a serviceable, tunable option to return reliable fueling and throttle response. If your vehicle uses modern engine controls or late-model GM Q-Jet\/AOD configurations, consult an expert before purchasing.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this carburetor compatible with EFI or late-model GM control systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This AFB-style carburetor is for non-computerized engines and is not suitable for EFI or GM Q-Jet controlled systems from 1981+.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the unit include installation instructions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No printed instructions are included; follow reputable online setup videos or factory manuals for proper installation and tuning.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"condgreemee","offers":[{"title":"Default Title","offer_id":67585594654905,"sku":"B0BNHRKYSN","price":350.91,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/condgreemee-front-view-carburetor.jpg?v=1790473444","url":"https:\/\/redleafauto.ca\/products\/condgreemee-1406-600-cfm-4-barrel-afb-style-carburetor-square-bore-electric-choke-two-step-metering","provider":"Redleaf Auto","version":"1.0","type":"link"}