Which edelbrock carb do i need

A radical cam profile, large-port aftermarket cylinder heads, and a single- or dual-plane intake manifold determine even further how much carburetor we're going to need. A cfm carburetor may perform quite well on a stock 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 cfm.

These basic formulas get us close to an engine's carburetor sizing, but doesn't hit the nail on the head. As a result, we have to take this formula a step further. Begin with estimated VE, which is always open to debate, depending upon how radical an engine is. Once you have baseline numbers, you have to select not only what size cfm carburetor you're going to need, but brand and type.

Vacuum or mechanical secondaries. Single or double-pumper. Choke or no choke. Swappable air bleeds or fixed. Single or dual metering block. And finally, how compatible the carburetor is with your throttle and automatic transmission kickdown linkages. When it comes to choosing carburetor brands, all manufacturers bring something good to the table. You just have to decide which brand will work best for you. Look at design features, tuning capability, flexibility, and how a carburetor will relate to your engine, vehicle, and driving habits.

Aesthetics plays a big role in carburetor selection because it's important to like the way a carburetor looks when you pop the hood—especially with a show car. Carb selection begins with your engine's most basic bones and how you intend to use it most of the time. Aside from the basic math formulas just presented, here are the elements you should consider when selecting a carburetor:. We're bound to get arguments on some of this. However, when you're shopping carburetion or even throttle body EFI, you need to figure in every element and how each will affect performance.

Displacement should be your first consideration because it is the most fundamental part of carburetor sizing. You wouldn't install an cfm carburetor on a stock By the same token, you wouldn't marry a cfm carburetor to a ci big-block. Mechanical secondary carbs are best used on applications with more radical camshafts, high rpm racing situations, and manual transmissions. Will a bigger carb make more power? Recently the Engine Masters show on the Motor Trend On Demand site did a comprehensive test to see just what differing sized carbs would produce.

Here is what they learned. A better than average HP street performance engine. Now this series of dyno pulls was on the Westech Performance dyno. Probably one of the best facilities around.

Here is what they found. View products such as service or maintenance parts, calibration kits, fuel filters and inlet kits. The lower rpm range has seen a tremendous improvement in torque and throttle response. The AVS2 does not have trouble starting when vehicle is hot.

It is super responsive and made in traffic cruising much more enjoyable, very happy with this carb. The needle and seat measure 0. Furthermore, what is an Edelbrock carb? Edelbrock Performer Series carbs are the perfect stock replacement carburetors and also the ideal four-barrel upgrade for mild street applications.

As I mentioned before, right out of the box an Edelbrock will be better. However, if you're a DIY guy who likes modding things around — Holley will be your best pal. The tuning is more responsive and less touchy than not only Edelbrock , but most other manufacturer's carbs. Holley cfm 4-bbl Carburetors. These carburetors have vacuum secondaries which are for use on a wide variety of vehicles.

The is aimed more at performance and the is aimed more at economy and street manners. I have a on my bone-stock in my '53, but we had a on the built in my Dad's Charger. The engine's volumetric efficiency is a measurable value and with a correctly matched carburetor you will receive the best performance possible out of your engine. In , the 94 two- barrel carburetor was born, fueling flatheads and other engines until production ceased in This 2 barrel Edelbrock carb is finished off with a zinc-dichromate coating for durability and classic looks.

You want a spring that will ensure the rods are down at idle, where you experience 8" of vacuum.