measuring air pressure

OK so those who follow my Project thread know I have created a forced fresh air intake.  This intake picks up fresh air from in front of the Radiator and just below the hood and behind the grill.  This area while at speeds above say 20 mph create a high pressure area similar to what is found at the base of a windshield like on a 68-69 Chevelle. Which GM used to feed the Cowl induction intake used on High performance Chevelles.

My ducting is approx. 2 times the flow capacity as the stock air horn on a Carter WO on a 134L

I'm curious with the way I have my air intake and air cleaner system set up if my intake can actually create boost. Now before you shoot me down think about it if you feed air through a funnel at say 40mph will not the air coming out of the small end of the funnel be denser and moving faster then the air entering at the large end? IE BOOST

SO I am thinking about picking up one of these gauges to see if I can actually measure that pressure. Or if there even is any pressure or if the engine still has to suck in its air.

The gauge should tell me if there is even an 1/8 of a pound of boost (granted 1/8 of a pound will do nothing for performance) But I think it would be fun to see if there is some. And if at say 40mph I'm getting a couple pounds that would certainly be a boost to my HP.

And since this is something setting CHUG on a Chassis Dyno will not show unless I some how did it while in a wind tunnel which ain't happening on my budget or anywhere around here.

So now shoot me down save me $28 bucks.

Interesting I just worked through a couple Boost estimators on line. I am assuming with my engine improvements and reduced parasitic drag I am going to have an 80HP engine with 20 HP going to the drive train as shown by dyno tests on other 134L powered CJ-2A's I'll have 60HP at the rear wheels at 4000 rpm.

Anyway just 1lb of boost according to these calculators will result in almost 5 lbs of additional HP.

Be interesting to see how it all comes out.

One would think that right in front of the grill. Pressure would be higher. But then that’s where the radiator is. Any pressure there will will be relieved by escaping through the radiator. Still if you forget to latch the hood down at about 25 it will start to come up. (Don’t ask me how I know). There is not enough pressure yet to overcome gravity but I would think by 30 you’d have trouble seeing around it.