carb selection

[86 K-10]

the 350 starts going in tomorrow and i wanted to get some opinions on the carb. it's my daily driver so obviously mileage is going to be the bigger issue than WOT response.

i've got 2 options: the standard off the shelf holley 600cfm and a holley street avenger 570cfm

im leaning towards the 600...the 570 seems like it may be a little on the small side, but then ive never had experience with the street avenger line.

[79k30dually]

Depending on how much money you've put into the air flow side, I'd go with the 570. Most stock 350's will run well with 600's, but in my opinion for a DD the will run better with a 570 or smaller. Just my opinion, Ron