{"product_id":"ustar-1405-600-cfm-4-barrel-square-bore-carburetor-manual-choke","title":"USTAR 1405 600 CFM 4-Barrel Square Bore Carburetor - Manual Choke","description":"\u003cp\u003eIn this review the USTAR 1405 600 CFM carburetor is evaluated for street and restoration V8s that need a reliable, mechanical replacement. The bottom line: this carburetor is best for classic Chevy, Dodge and GMC V8 engines that are not computer controlled and need a straightforward, manually choked 4-barrel unit. Installers will appreciate the aluminum construction and leak-free design, and the single biggest reason to buy is the direct-fit compatibility with a range of 5.0L to 5.9L V8s where an aftermarket mechanical carburetor is required for performance and drivability.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits multiple small- and medium-block V8 engines including 5.0L, 5.2L, 5.7L, 5.8L and 5.9L, making it a versatile replacement for many older vehicles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM Rating:\u003c\/strong\u003e Rated at 600 CFM, the carburetor provides sufficient air flow for street and mild performance applications that match that capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Made from aluminum to reduce warping over time, the design aims to remain dimensionally stable under heat and use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual Choke:\u003c\/strong\u003e The manual choke provides simple, predictable cold-start operation without electronics, useful for non-computer-controlled engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeak-Free Design:\u003c\/strong\u003e The unit is precisely built and tested to minimize leaks and deliver consistent fuel metering for reliable performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Ships with the 1405-600 CFM carburetor and all pictured parts so installers have what they need for a straightforward swap.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis carburetor is aimed at owners and mechanics working on classic or older vehicles with non-computer-controlled V8 engines who need a direct replacement for a square-bore 4-barrel setup. It suits street restorations, mild performance builds, and replacements on trucks and muscle cars where 600 CFM is appropriate.\u003c\/p\u003e\u003cp\u003eIt is not suitable for late-model vehicles with electronic engine controls or for builders who require an electric choke or multi-stage fuel management; those users should look for an EFI conversion or a computer-compatible carburetor system.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDirect compatibility with a broad set of 5.0L to 5.9L V8 engines simplifies part selection for many classic vehicles.\u003c\/li\u003e\n\u003cli\u003eSolid aluminum construction limits warping and helps maintain a reliable seal over time.\u003c\/li\u003e\n\u003cli\u003eManual choke and simple mechanical design make troubleshooting and adjustments straightforward for DIY mechanics.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNot suitable for computer-controlled engines, so it will not work with modern EFI or PCM-managed systems.\u003c\/li\u003e\n\u003cli\u003eManual choke requires driver intervention at cold start, which some users may find less convenient than automatic alternatives.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eUSTAR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1405-600 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCFM\u003c\/td\u003e\n\u003ctd\u003e600\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Barrels\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange\u003c\/td\u003e\n\u003ctd\u003eSquare bore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChoke\u003c\/td\u003e\n\u003ctd\u003eManual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe USTAR 1405 600 CFM 4-barrel carburetor is a practical, value-minded replacement for older V8s that require a manual-choke square-bore unit. Its aluminum construction and included hardware make installation straightforward, and it delivers reliable, predictable performance for non-computer-controlled Chevy, Dodge and GMC engines. Buyers looking for a simple mechanical swap will find it a sensible choice.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this carburetor work on modern computer-controlled engines?\u003c\/strong\u003e\u003cbr\u003eNo. This carburetor is not suitable for computer-controlled applications and is intended for mechanical, non-PCM-managed engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich engines is it compatible with?\u003c\/strong\u003e\u003cbr\u003eIt is compatible with 5.0L 305Cu, 5.2L 318Cu, 5.7L 350Cu, 5.8L 351Cu and 5.9L 360Cu V8 engines as listed by the manufacturer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it include all necessary parts for installation?\u003c\/strong\u003e\u003cbr\u003eYes. The package includes the 1405-600 CFM carburetor and the parts shown in the product images; buyers should check the picture to confirm included components.\u003c\/p\u003e","brand":"USTAR","offers":[{"title":"Default Title","offer_id":48622269104347,"sku":"B0DB14V8HP","price":146.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71d8dDpo6YL._AC_SL1500.jpg?v=1778507261","url":"https:\/\/gearmusthave.com\/products\/ustar-1405-600-cfm-4-barrel-square-bore-carburetor-manual-choke","provider":"GearMustHave","version":"1.0","type":"link"}