Can I put an 800cfm CARB on a stock 350?
Although an 800cfm carb or 2x4 set up can be put on, it won't neccessarily improve the 350's performance. In fact, it just may very well hamper the stock 350's performance.
What is a good CFM for a 350?
But as a general rule, for a 350, 600-700 cfm should do OK depending on how you run it. I would think 650, would serve it well, and anything over 700, would be a waste. . Hello... welcome... where are you located? ( ours is off to right --> ) . Yeah, we need more info... is this a 125 HP 350" for a California spec. 1975 Monza?
What is the best carburetor for Chevy 350?
You will require a banjo bolt to turn it or to buy the fuel line kit. Edelbrock 1406 EPS is the best carburetor for Chevy 350 due to its incredible features and a 90-day warranty. It is super efficient, durable, light in weight. Installing it might be a bit of a problem but once in place, it will start to show results.
Will a 750cc carb work on a 350cc?
If you've got a bone stock 350 with 275hp...sure you can use a 750, but, the carb is not being used for it's full potential. It'll work, but a 600 or 650 will be able to do the job just as good, if not better then the 750.
Is a 650 cfm carb too big for a 350?
600 or 650 would work. The quadrajets that come on stock 350's are 750's. I've experimented on sbc boat motors and went from 500-850 the smaller carb will accelerate out of the hole faster than a larger carb. The larger carb will give you more top end.
What size cfm carb do I need?
The formula for calculating how much CFM (cubic feet per minute) your 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?
450-470 hpSo, 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.
Is higher CFM better with a carburetor?
Carbs with a higher cfm rating will have larger barrels. But, bigger is not always better. At wide open throttle, the carburetor barrels are big holes in the intake. Larger barrels mean that the incoming air does not have to move as quickly.
What size carburetor 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.
Will a bigger carb make more power?
A bigger carburetor has a bigger space that can help to increase horsepower by allowing more air and fuel to travel into the combustion chamber at once. More air and fuel in the combustion chamber means bigger combustion is generated. Thus, more horsepower.
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.
Do carb spacers add horsepower?
Yes, they will give you more horsepower. But carb spacers have another important function. They also act as insulators which keep engine heat away from your carburetor to ensure cooler incoming air and fuel.
How much HP can a 950 carb support?
800 hpAlthough way too small according to the CFM calculations presented earlier, a 950 Ultra HP can pass enough air to support more than 800 hp from a street/strip 572.
What does 750 mean on carburetor?
The 750 used an average seven percent more fuel than the 525 to make the most power of all carbs, while the 625 used twice that (average 14 percent more fuel than the 525) to make only middle-of-pack power. That means the 625 had the highest bsfc of all the carbs we tested.
Are Edelbrock carbs any good?
Without any hesitation, I can say this is the best choice for tuning beginners. If you're not that familiar with the tinkering – and you don't really care either, grab an Edelbrock. Their carbs work extremely well right out of that cool box they come in.
How do you fine tune a carburetor?
0:412:42How To Adjust A Carburetor On Your Car - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd all you need is a screwdriver on the front turn it to the left makes it go slower turning to theMoreAnd all you need is a screwdriver on the front turn it to the left makes it go slower turning to the right makes it go faster. So with the engine running turn the screw. So it idles decently.
Holley 0-7448 -- Best Value Carburetor for Chevy 350
Holley 0-7448 is not a 4 barrel carburetor like Edelbrock but it has many features that make it a valuable carburetor.
Auto Parts Prodigy ROCHESTER 2GC -- Best Budget Pick Carburetor for Chevy 350
Auto Parts Prodigy ROCHESTER 2GC -- this budget-friendly product is a favorite among Chevy customers due to its low price and ability to save fuel.
Conclusion
These were three of the best carburetors for Chevy 350. You should pick one keeping your budget and requirements in mind.
spav350 Veteran Member Lifetime Gold Member
Is this combo no bueno? I have a stock 350 that I'm going to put in an '83 Jeep CJ5 with manual tranny, but am curious if a 390 would work instead of going too big with a 600. It's a cruising jeep only, no hardcore anything other than puttin' around.
mjoc Veteran Member
390 would be a little too small you should go with a 500cfm model it would work better. A 390 would choke a 350.
spav350 Veteran Member Lifetime Gold Member
Ran a Holley 390, on a 30 over 350 9 to 1 compression engine with small 1-1/2 Tri-Y headers and a Edelbrock SP2P intake. This engine had a recurved HEI and a mild 260 hydraulic cam with a turbo 350 and 3.08 gears with 26" tall tires. The car weighed 3200 lbs and knocked down 27 mpg on a 45 mile commute!
