318 power

carter are not mechanical...the throttle blades do open with the linkage..but the air valve does not open until the flow is high enough...so the carters are more like a vacum carb.

as far as the 318....I would look at the summit brand cam...lifter...timing gears...intake manifold and eddy 600 carb...i would change to electronic ignition..and a good flowing dual exhaust ...with header being an option...