High Performance Street Carb
Holley Street HP Aluminum 850 CFM 4-barrel carburetors give you trouble-free performance in a good-looking, easy-to-install package. They're calibrated to give you many of the high end performance features but optimized for more street oriented applications. Street HP carbs not only perform great, they feature a lightweight tumble polished aluminum construction that looks as good as it performs.

Maximum Tunability
Holley Street HP carbs are factory set and flowed. Four corner idle allows you to precisely set idle. Screw in air bleeds allow even further optimization of air/fuel ratio. You can even change the cams activating the dual accelerator pumps for greater control of fuel flow on tip-in.

850 CFM Rating
Rated at 850 cubic feet per minute of airflow (CFM), this size carburetor is good for large displacement street/strip engines making 500+ horsepower. A good example would be a moderately built 454 that will be used at 6000+ RPM. Choosing a carburetor that is just big enough is optimal for a street car to ensure good throttle response and proper fuel flow for your application.