Cold Air Intake

[Andy4639]

If your going to a cowl hood make a box off the bottom of the hood that will inclose the carb when you shut the hood. This is what the shaker hood did on the road runners and such cars.

Just some idea's for yea!





Looking at this picture and seeing the metal attached to the hood you could cut a hole for the cleaner and have it forced feed cold air.

[WorkinLonghorn]

I read somewhere a long time ago (Hotrod) that car makers started putting hood scoops on there cars (facing front) basically to look good but in actual fact that was probably the worst place for it since the air hitting the front of the car would be steaming OVER the hood scoop and actually causing a low pressure area right where the scoop was. When they did tests they found that at the base of the windshield/hood area was a higher pressure area,thus the cowl hood scoop arrangement.
However,I am guessing that the pressure there would not be significant until very high speeds are reached,but I could be wrong.
The stock air cleaner snorkel on our trucks seems pretty restrictive for some reason (maybe it promotes low end torque??) I can feel more power when I flip the cleaner lid over so air bypasses this. But it does stick out pretty far to the front and just may pick up a mixture of cold and radiator heated air.Maybe a compromise with mileage in mind.
I tend to believe that the engineers had solid reasons for their designs. But for strictly power considerations I'll go with the cold air intake with a larger than stock air cleaner opening similar to what Texan... has,plumbed to the front.

[bfay17]

Yea im thinking the cowl now with a large air cleaner and possibly a set up like they have on the 88-98 chev trucks. the air cleaner with ram air tube running to the fender... Would you think that this would work?

[WorkinLonghorn]

That's what I'm thinking, although I don't expect much ram air effect at my speeds.

[bfay17]

haha very true i wont prolly see much effects from it ether!!! but hey i like the look and have all the stuff at my disposal

[lowriden58]

this is my setup.. no cold air intake but sure does "suck" some air in

[Camper Power]

this is my kinda cold air intake!!! im guessing in the reason for the factory snorkel air cleaner is to keep mud and water away from the filter

[texanidiot25]

Originally Posted by Andy4639

If your going to a cowl hood make a box off the bottom of the hood that will inclose the carb when you shut the hood. This is what the shaker hood did on the road runners and such cars.

Just some idea's for yea!





Looking at this picture and seeing the metal attached to the hood you could cut a hole for the cleaner and have it forced feed cold air.

Only issue I've ever seen with sealing the intake area to the hood is when it rains. My dad had a scoop on his old '74 Camaro. For dry weather and racing the air cleaner was sealed to the hood for obvious reasons. But when it rained, he had a block-off plate for the scoop and swapped out the air filter and sealing plate so it would breath under the hood. One day, thanks to Houston weather, it started pouring unexpectedly. The car was pullin' air from the hood, so he had to pull over. Since he hadn't planned on the rain, he could only toss the scoop cover on, leaving the intake sealed against the hood. Every time he stepped on the gas, that bored over 396 would pull the hood down an inch or so trying to suck air.

I read somewhere a long time ago (Hotrod) that car makers started putting hood scoops on there cars (facing front) basically to look good but in actual fact that was probably the worst place for it since the air hitting the front of the car would be steaming OVER the hood scoop and actually causing a low pressure area right where the scoop was. When they did tests they found that at the base of the windshield/hood area was a higher pressure area,thus the cowl hood scoop arrangement.
However,I am guessing that the pressure there would not be significant until very high speeds are reached,but I could be wrong.
.

Depends on placement. Like the scoop on the GT mustangs (is also blocked) is a prime example of the placement being wrong. But notice cars that do actually pull air from a forward scoop (Think Ferrari's, Corvette Z06, The late model Trans-Am's ram air scoop) are very low down on the hood, close to the nose. Lots of high pressure breaking over the nose of the car, and the Ram-air effect of being up front. Aerodynamics, in my studying, is such a tricky thing it's hard to say from car to car. But it's said aerodynamics starts to come in play at about 30-40+ MPH.

YouTube - Truck bed test, open bed

< Thats a video I made that's a flow illustration of a '69 C10. It's a very basic representation of an aerodynamic test...

Anyways, in my eyes, a sealed off cown induction and a cold air kit piped to the grille area would be the best for performance.

The debate about fuel mileage, is on going...

[Andy4639]

In this picture you can see the 4" hole beside the drivers side head light. This is the cold air inlet.

I have the internal alternator so I drilled the support where the old external regulator should be. I made the cover peice between the grille shell and the radiator support to force more air threw the radiator and the opening for the cold air intake.