Speedway Motors Racing Engines GM 604 Crate Engine Standard Alc. 4150 Carburetor

For builders who don't need the Pro Series upgrades, this Standard alcohol carburetor delivers the same 750 CFM rating for GM 604 racing crate engines using an all-aluminum main body with custom CNC-cut metering blocks and aluminum fuel bowls. Standard build details 7/8-20 threaded fuel inlets in place of an O-ring style fitting Each carburetor is hand built and flow tested before it ships Square-bore 4-barrel flange, mechanical secondaries, universal throttle linkage, ball-burnished finish Specs to confirm before ordering This unit is sized for methanol and falls within the 700-799 CFM window, sharing bolt holes spaced 5.160 by 5.625 inches apart with the rest of this carburetor family. It ships new with gaskets included. If your racing class doesn't require the Pro Series fuel inlet style, this Standard build gives you the same airflow rating at a simpler construction level. Common questions What separates this from the Pro Series alcohol carburetor? The Standard build uses threaded fuel inlets and skips the billet base plate found on the Pro Series version. Does it run on gasoline? No, it's calibrated for methanol only. Will it match the bolt pattern on my GM 604 intake? Yes, it shares the same square-bore mounting pattern as other carburetors built for this engine. Is it hand built or mass produced? Each one is individually assembled and flow tested rather than pulled off a generic production line.