I am planning to install a new carb on my truck, but am unsure which would be the better choice. All help is appreciated.
Vehicle is a 75 C-10 1/2 ton 2wd, stock sb chevy V8 350 5.7L with the TH350 transmission. For now I will be keeping the original intake manifold.
I am looking for simplicity, and reliability, from the new carb. The less I have to mess with it, the better, as I know little about carbs. In honesty they intimidate me... What is a good cfm rating for my vehicle? Also, I am not worried about being smog compliant anymore, as the truck is now smog exempt.
The two main carburetors I am looking at are
1) Edelbrock #1406 600 cfm
2) Holley #0-80670 (model 1401)670 cfm  

75_Chevy_Guy,

I would first find out what the truck came with. I'm figuring 500-600 CFM carb. You need to know this to help you decide what carb you should put on your truck. If it's to big a carb then your truck will not utilize all the fuel that your giving it and you will be throwing your money out the exhaust. Check on line to determine what carb is best for your truck. If it's stock then stick with the stock CFM. If it's been modified then you can consider some larger carb's.

Bigger carb's don't make it perform better or faster, it's a combination of manifold, cam, and Carb. Anyone without the others would not increase the performace enough to justify the cost of the change just for the sake of changing.

Regards!!!  

Ditto on soba-03 comments. If you leaving it stock why not just replace it with a stock Rochester? you'll have no vacuum or performance concerns. A larger or performance carb is'nt going to give the stock motor enough of a shot in the arm to justify the cost & possible customizing of linkage, vacuum, etc. Good Luck  

So 75_Chevy_Guy have you decided on what carb you are going to use?  

Don't forget exhaust.  If you can't exhaust it, you can breath it.