Holley 0-80457S Model 4160 600 CFM Square Flange 4-Barrel Vacuum Secondary Electric Choke Carburetor.
What is the difference between a Holley 4150 and 4160 carburetor?
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 is a 4160 style carburetor?
The Holley 4160 carburetor was introduced as an updated version of the 4150 in the 1970s. The most noticeable difference in the 4160 is the thin secondary metering plate, which is used in place of the secondary metering block. … The 4160 comes with vacuum secondaries and is great for street applications.
How can I tell what CFM my Holley is?
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.
How do you adjust a Holley 4160 carburetor?
Use caution to prevent excessive fuel spillage and potential fires. With the fuel level set adjust
How do I identify a Holley 4160?
The Holley List Number can divulge any and all necessary information to identify the specifications for your carburetor. On the standard 4150/4160 models, this number will be located on the throttle lever side of the air horn. Depending on the age of your carburetor, the list number can begin with distinct markings.
How many CFM is a Holley 4150?
Holley 1000 cfm 4150 HP Carburetor Kit Includes 1000 CFM Carb – Spun-in annular boosters.
Is a Holley 4150 a square bore?
A 4160 and 4150 are both square bore carburetors.
Is Holley 3310 a 4150?
The 4150 number refers to the overall configuration as a squarebore Holley with metering blocks on both ends. This carburetor is also commonly referred to as the 3310, which is the original aftermarket part number for this style 780-cfm carburetor. Later version 0-33310’s were designated 750-cfm carburetors.
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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.
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.
How do I tell what model my carburetor is?
Look at the upper front of the carburetor on the piece known as the airhorn, or choke tower. This is a rectangular part of the carburetor with rounded edges, open to the top of the part. There will be a small number stamped there.
Can you convert vacuum secondaries to mechanical?
You can’t convert mechanical secondary carbs to vacuum, or vice versa. Too many differences. You can get either vacuum or mechanical secondary carbs for nearly any application.
Are all Holley Metering blocks the same?
All it takes is a little bit of study. The layout for HP carburetor metering blocks and Dominator carbs will look slightly different from this standard Holley two-circuit metering block, but most of the circuits are exactly the same.
How do you remove a metering block on a Holley?
- Step 1: Remove Idle-Mixture Screw. Rotate the idle-mixture screw counterclockwise for removal. …
- Step 2: Remove Idle-Mixture Screw Gasket. If you plan to clean the metering block with carb solvent, remove the small sealing gasket and replace it with a new gasket.