My first choice for street or strip has and always will be a Holley. No problem if you like Eddys, but I've had nothing but headaches with the couple I've owned.What is with the holleys. How about the AVS/AFB style. They would be my first choice for anything on the street.
that is more for a 383ci motor. For a 350, depending on the duration of the cam. id go 600cfm all day unless its a beefy cam. then, a 650 would be the highest i would go! if its a stick car dont worry go 670cfm but silver surfer is right on the money to the TTTTTTTTTTTT!!!!!!!!If I understand these replies I should use like the avenger 670cfm :welcome: on my dual plane manifold? Thanks
its this simple
do you want crisp fast throttle response? or do you want it to hesitate and have slow throttle response?
if you want it crisp a 600CFM carb with vac secondarys is the way to go and youll get better fuel economy.
if you want it to hesitate its a 650-670cfm carb
im running an 850 Mec Sec DB on a 496 thats almost 2 times the size of your motor so you do the math a 600 is the ticket here all day everyday!
Because the Qjet is a spread bore carb. It has the small primaries for street driving and extra large vacuum secondaries for high RPM. Best of both worlds. I don't know why square bore carbs are the norm and preferred.if that is the case then why did most all 350's comming from the factory came with a 750CFM Q-jet.