Hi,
I'm trying to figure out what size carb I should run for my motor. It is going to be used for the street and I already have a couple of carbs to choose from. I heard there is a formula to figure that exact cfm needed for your motors application, this would also be helpful if someone could tell me that. Anyways just any suggestions, I intitially had a holley 600 cfm planned but that was with an edelbrock victor jr. single plane intake, and now im using an edelbrock rpm performer (dual plane) so heres the set up:


chevy 350 .060 over
world product s/r torqure heads
comp cam xe268 cam
kb .0100 domed pistons
fulltube headers/magnaflow mufflers 2.5" dual exhaust
TH350 2000 stall convertor
posi rear w/t 3.73s
All in side an 88 iroc full interior ect.

Any info would be helpfull thanks
-tom

 

i would say 650-750cfm. you can go to holley's website and they have a carb picking program thing... just click on the options and it will give you some good choices.