slimbo5 said:uhhhhhhh...wrong. a holley power valve feeds the booster circuit. the only time an open power valve will put fuel into the engine is when the mains are flowing. generally this is between 2500-3000. at idle the carb is being fed by the idle circuit and if the blades are too far open they will also feed into the transfer slots. its a big misconception that a too high vacuum rated power valve will flood a engine at idle.
Ya beat me to it, Slimbo!!
BTW, if you're planning on driving the car on the street, I'd stay away form locked timing. That's "old school" drag only tuning.
Tommy