Where are the numbers on a Holley 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. The date code will be right below it.

What is 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.

How do I know what CFM my Holley carb is?

Will a bigger carb make more power?

1. Performance Improvements stocks carbs from Holley Performance, Edelbrock and Proform Parts.
2. The formula for calculating how much CFM (cubic feet per minute) your engine requires is: CFM = Cubic Inches x RPM x Volumetric Efficiency ÷ 3456.

Did Holley buy demon?

We reported that BG Fuel Systems and Demon Carburetors were poised for a comeback in a blog earlier this week. The fact that the company was bought by High Performance Industries, the same company that owns Holley, Demon’s biggest competitor, has created a bit of a stir in the automotive aftermarket.

Are all Holley Metering blocks the same?

The primary metering blocks for a center hung and side humg 4150 and 4160 are completely interchangeable.

How do you read a date code on a Holley?

Decoding them is as follows:

1. Three Digit – Example 763 > 7 – Year (1967) , 6 – Month (June) , 3 – (Third Week)
2. Four Digit – Example 0798 > 079- Day of Year (would land in March) , 8 – 1978/1988/1998/2008.

What CFM is a Holley 4150?

830 cfm
Holley 830 cfm 4150 HP Carburetor Kit Includes 830 CFM Carb.

Is Holley better than Edelbrock?

Significantly lower gas mileage compared to any of the Edelbrock carbs. As a whole, here are a few benefits Holley can boast about: Smoother acceleration than Edelbrock. Fares better with more in-depth tuning.

What happens if your carburetor is too big?

An engine with a carb that is too big will put out less Torque and Horsepower . It will be difficult to drive due to poor low-end torque. If you drag race your car, an oversized carb will produce slow 60 ft. times.

How much horsepower will a 750 cfm carb support?

A 750DP on a 330hp-400hp 5.7 with a dual plane intake (performer rpm) is easy to tune and will make max power to boot.

Is Demon owned by Holley?

Where is the part number on a Holley carburetor?

After determining the carburetor is a Holley, look for the code numbers, usually located on the side of the air horn. The Holley model number is present along with the auto maker part number, if factory-issued, a date and application code. Locate the lone four-digit code.

What is this Holley carb used for?

Classic Holley carbs have been a staple for rodders around the world for decades. They’re calibrated for use on stock to mildly modified vehicles and have that classic Holley look. Holley’s 0-8007 is calibrated and intended for small V8s or 6 cylinder engines as well as 2×4 street tunnel ram style set ups.

What is a 4 barrel carburetor?

A four barrel carburetor is basically two, two barrel carburetors back to back sharing a fuel inlet. depending on the type of linkage between the halves, the back two barrels open by mechanical means, air flow or by a vacuum actuator.