FAQ: What Carburetor Do I Need For A 383 Stroker?

What is the best carburetor for a 383 stroker motor?

Best Carburetors for 383 Stroker

  1. Holley 0-80457sa 600 CFM Four-Barrel Street Carburetor.
  2. Edelbrock 1405 Carburetor.
  3. Edelbrock 1406 Performer 600 CFM 4-Barrel Carburetor.
  4. Holley 0-80738C Model 4150 650 CFM Four-Barrel Street Carburetor.
  5. Quick Fuel Technology SS-750-AN 750 CFM Street Carburetor.

How do I know what size carburetor I need?

The formula for calculating how much CFM (cubic feet per minute) an engine requires is: CFM = Cubic Inches x RPM x Volumetric Efficiency ÷ 3456. Any ordinary stock engine will have a volumetric efficiency of about 80%.

How much horsepower will a 650 cfm carb support?

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.

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What crank is used in a 383 stroker?

The GM small block 5.7-liter 350 is the base for the 383 stroker; the 350 crankshaft is exchanged for a GM small block 400 crankshaft. The 400 crankshaft rod journals produce a longer stroke for the engine and create a larger displacement. Professional machining of the engine is required.

Is a 650 cfm carb to big for a 350?

If you’re expecting a maximum of 6,500 rpm, you’re going to need a 650- to 700-cfm carburetor. These sizing numbers are only the beginning of carburetor selection—a baseline. A 600-cfm carburetor may perform quite well on a stock 350 Chevy.

What happens if your carburetor is too big?

If the barrels are too big, the loss of air velocity means the cylinder will not fill to its full capacity. 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.

How do I know if my carburetor is rich or lean?

Q: How Do You Tell if a Carburetor Is Rich or Lean? A: One way to tell for sure is by “reading” the spark plugs. If the plug tip is white, the mixture is lean. If it’s brown or black, it’s rich.

Does a bigger carburetor mean more power?

The answer is no, not really. The amount of fuel that’s sucked into the carburetor is controlled by the carburetor jets. Installing a bigger carb is simply going to improve the power potential of your bike. You still have other things to worry about like improving air intake, exhaust flows and jets.

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How much horsepower does a carburetor add?

After you fix what’s limiting performance, an Edelbrock Performer intake can add as much as 10 HP. The FAQ forum is a good place to ask questions. There are differences between engines and performance improvements.

Are carb spacers worth it?

Spacers are said to improve air/fuel vaporization through and out of the carburetor. Anytime the air/fuel charge has to turn sharply coming off the carb, it increases the chance of separating the fuel from the air.

How much horsepower does 383 stroker have?

The 383 stroker engines have been reported to achieve 330 horsepower with 410 foot-pounds of Torque, 395 horsepower with 410 foot-pounds of Torque and 395 horsepower with 410 foot-pounds of Torque.

Can you put a carb on a Vortec 350?

You can use a carb intake for vortec heads, just get an intake made for vortec heads. A regular chevy distributor will drop right in. Chances are you’ll need to run an electric fuel pump since your block is likely not drilled for a fuel pump pushrod.

What’s the difference between a 383 and a 383 stroker?

The stroker has an increased piston speed because of the longer stroke. The rod and piston have to travel in a larger diameter in the same engine rpm. This increases the piston speed, which makes the stroker pull more air at a lower engine rpm. A 383 has the same piston speed at 2,500 rpm that a 350 has at 3,100 rpm.

How much does it cost to bore a 350 to a 383?

The machine work is usually in the $250~300 range for bore & hone to size ( including cam bearing install if desired). Bottom edges of block may need light relieving to clear rod bolts.

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What’s the difference between 350 and 383 engine?

The biggest advantage to putting a crankshaft from a Chevy 400 into a 350 block to produce 383 cubic inches is that more displacement equals more power. Also, the longer crank throw produces more downward thrust, which translates into torque. And torque is what we’re after, especially in a truck.

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