How much horsepower will a 650 cfm carb support?
Andrew Henderson
Published Mar 18, 2026
How much horsepower will a 650 cfm carb support?
450-470 hp
So, using your Google-Fu you type “How much power can a 650 cfm carb support?” Well, chances are that you’ll get answers in the 450-470 hp range, but that’s not really the right way to look at it. In fact, horsepower—or even torque, for that matter—doesn’t matter at all.
What’s the difference between Holley 4150 and 4160?
These two are very similar with the primary difference that the 4150 uses a thick metering block in both the primary and secondary while the 4160 is shorter in length and uses a thin, metering plate on the secondary side.
What model number is a Holley 750 double pumper?
Technical Details
| Manufacturer | Holley |
|---|---|
| Model | Holley 750 Ultra Double Pumper W/Blue Billet |
| Item Weight | 9.4 pounds |
| Item model number | 0-76750BL |
| Is Discontinued By Manufacturer | No |
How do I know what CFM my carburetor is?
The formula for calculating how much CFM (cubic feet per minute) your engine requires is: CFM = Cubic Inches x RPM x Volumetric Efficiency ÷ 3456.
What cfm carb do I need for a 350?
A 600-cfm carburetor may perform quite well on a stock 350 Chevy. However, the minute you start weaving in power adders like a hotter cam, a dual-plane performance intake manifold, and aluminum heads you’re going to need 700-750 cfm.
Why use a double pumper carb?
The reason double pumpers (mechanical secondary carburetors is their proper name) have these twin accelerator pumps is to prevent a momentary lean situation during quick throttle blade movement. All carburetors use an accelerator pump circuit, however many only have one on the primary barrels.
How do I identify a Holley 4160 carburetor?
It’s like a “VIN” for your carburetor and should be hand-stamped on the front of the choke tower to the right of the vent tube on most typical Holley carbs. The list number typically is four to six digits long and may or may not have a suffix number behind it.
Is a Holley 3310 a 4160?
The 3310 remained largely unchanged until the 1970s when it received a primary metering block, secondary metering plate, straight-leg boosters, a reduced flow rating of 750 cfm, and new model name: the 4160. The 4160 version of the 3310 helped make the 3310 a universal-fit carburetor for all makes of street engines.
What does double pumper mean?
The Double Pumper gets its name from the twin accelerator pump outlets (arrows) for both the primary and secondary throttle bores. This is an HP version carburetor where the choke housing is removed for smoother air inlet into the carburetor. The manual choke can easily be upgraded to electric control at a later date.
Where are Holley carburetors made?
Bowling Green, Kentucky
If you’ve driven a car equipped with a Holley carb, chances are that carburetor was built in Holley’s Bowling Green, Kentucky, factory. That’s because Holley has been building carburetors in the same facility for more than 50 years.
What size carburetor do I need for a 355?
To arrive at the most appropriate carburetor choice, there’s a basic formula: engine displacement multiplied by maximum rpm divided by 3,456. For example: a typical 355ci small-block—a 0.030-over rebuild—with a 6,000-rpm max engine speed would work well with a 616-cfm carb ((355 x 6,000) 3,456 = 616.32).
What size carb do I need for a 383 stroker?
Carburetor For 383 Stroker recommends a 650 cfm carburetor. A 750 cfm carburetor will make the engine more powerful, but it is the largest that should be used unless the engine is being used for racing.
Why choose Holley Double Pumper® carburetors?
Holley Double Pumper® carburetors are a perfect performance upgrade for hot street cars and race vehicles. Double Pumper carburetors are an American icon when it comes to performance carburetors.
What kind of fuel line does a Holley 4150 use?
Fuel Line Chrome For Holley Model 4150 Carburetor 5/8-18 inverted flare inlet. 9.460″ center to center. Pro-Series Adjustable Secondary Linkage Kit for all Holley Double Pumper, HP, and Ultra XP carburetors. Black anodized adjustable billet fuel line for dual feed Model 4150 and Dominator Carburetors.
What kind of parts does Holley make?
Holley’s products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start to finish, Holley has the parts to make your dream a reality.
Why buy a 4150 Double Pumper carburetor?
Holley 4150 Double Pumper carburetors are a perfect upgrade for hot street cars and race vehicles—they’re an American icon when it comes to performance.
