Thread: Carb question

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I just got a mild build 350 in my car and was wondering what is a good carb to put on it? i got a eldebrock 600 cfm on now i want a 750 cfm holly or something like it what do you think. my 350 is bored .30 over 10.5 to 1 compression the cam is 218 at .50 and the lift is 450 power band is 1800 to 5800 and i got some roller rockers.

I don't know what kindof fuel you have available to you, but if the motor is truly 10.5:1 static compression ratio, then that cam is way too small. I doubt you will be able to operate the motor on pump gas without detonation. If I were you, the carburetor would be the least of my worries right now. 10.5 needs a cam with around 235-240 degrees duration @ 0.050" tappet lift.

You have to match the intake closing point on the intake lobe of the camshaft to the static compression ratio in order to arrive at a dynamic compression ratio which will make cylinder pressure that is compatible with the available fuel.

Now, if you have E85 available, rock on dude, you're good to go.

Oops, got carried away and forgot the original question. You'll make more hp and torque with a 750 if you have enough gear to get the motor to the rpm point where it can use a 750. If you have a tall, stock-type rear gear, then just hang onto the smaller carb until you bolt in some gear. That cam is gonna want some gear too.....and a looser converter.....

For me 700 -750 CFM .

As for your camshaft yes you could step it up . But as for 235-240 at .050" on a 10.5.1 350 ? Re-check that math .

This 355 has 10.5.1 and runs a 230 dur at .050" .

http://www.youtube.com/watch?v=qkK0Wu9QEys

IMHO it's pretty hard to beat a well tuned Q-jet.

My final gear ratio is 4.56 and right now i am not detonating every thing is running good got really bad traction problems but ill get better tires i just want to know what is a good carb to run to get more power