K&N Stubstack

[JAM1775]

dalola....Your system looks great! I used the edelbrock pro Flo with the humidifier filter element. I have no more than 1/2 to 3/4" between the top of the Pro Flo and the hood. It did not negatively effect air flow because has no direction to go once entering the sealed air pan but straight down the carb throat . The faster you are moving the more downward pressure. The motor can only USE SO MUCH air but this certainly ensures more than adequate air flow and a colder air inlet. My throttle response on the highway was very noticeably snappier after installing the ram air. Just standing still on a dyno, which was recorded in 88 degree shop temps, my 351w gained 8rwhp and a leaner AF mix closing the hood over the ram air set up as opposed to standing still with no air cleaner sucking in heated engine air with hood OPEN. I must imagine moving at 50-60 mph the gain can be significant perhaps a 15-20 gain. Not enormous but cheap HP just the same. If you need to gain more space(1/4-3/8") between air cleaner and scoop , cut down the air pan bottom rim with a grinder. Even it out with a metal file, place it on a level surface to check it is level and use a carb gasket of course. You can drill holes in the lowered air pan to sit over the carb float adjustment screws. Install rubber grommets in the drilled holes to seal around the carb float screws. When you close the hood the thick foam will fully secure and seal the entire pan. Mine has never shifted and like Dave's lifts right off for carb access when the hood is open.