What is a good sized carb for a 318 bored 30 over?

[ramairthree]

an 800cfm Holley seems to be too much for it,
its on a car I am interested in.
Thanks.

[Rayzor]

Most 318's can handle a 600 well. An 800 is over kill.

[ramairthree]

I was thinking 6 to 650 would be about right.
I need to check, but I hope when he rebuilt it he threw the 340 or similar

cam in there.
he is going to check the specs

4 bbl, 340 cam, headers plus ported heads-

I think that is all to be had from a 318 for any reasonable cost ,
anything else and the money should have gone for more displacement.

thoughts?

[Rayzor]

sounds like you have the bolt on's covered.  But a rear gearing change can liven things up even with the 318.

[69bronzeT5]

I'm putting a 570cfm Holley Street Avenger 4bbl on my '73 318. All that's done to it is a lumpy cam and headers.