Under hood air comes out the cowl hole? You sure about that? Would debunk the whole cowl induction theory then...

I would have to believe that hot air would come out of there unless the air cleaner is sealed to the hood in which case the whole cowl induction theory holds water.

With low pressure at the base of the window, I would think that the evacuation of hot air from under the hood might even be a better use for it rather than using it to pull air to the engine. There are plenty of ways of piping outside/cooler air to the engine.

Also, at speed relieving air from under the hood would help keep the car low to the ground.

Is this wrong??:_paranoid

Ty

The base of the windshield is a high pressure area. However, to determine the flow of air you'd have to check and compare the mean underhood pressure vs pressure at the base of the windshield/cowl inlet; the air will flow across the pressure gradient from high to low. You'd have to get some pressure transducers or rig up a quick manometer setup to check the pressures. Or, go budget-style and simply tape a piece of streamer tape or paper to the back of the cowl hood and go for a drive and note if it sucks into the hood or flaps outwards.

With the cowl hood not sealed to a carb pan (as in the original installation) I don't know what the direction of flow will be-- someone do an experiment and find out, I want to know. I'm cowl-less or I would do it myself.

Hello Jerry! Thanks for the tip:thumbsup:

I found it here:

http://www.firewheelclassics.com/PDF...%20Catalog.pdf page 115 .

Btw really good pics on their catalog too.

The carb/air cleaner was not sealed off to the hood on Dad's car. If they were sealed off, it would work as designed to pull in cool air from high-pressure area at base of windshield.

The heat coming out of it, and into the interior is much more noticeable at low-speeds... the engine fan is pulling air in, and the hot air (which rises) escapes through the unsealed cowl hood.

Sealing off the carb would solve the problem, but Dad is cheap, and doesn't care much about performance, so we just covered the opening so it would be more comfortable to drive.

Cowl Hood Filler
 

Here is a filler piece that Scott at Chubby's Welding made for his 68 and my under construction 67. A really nice piece and he also makes a piece similar to it as a hold down on his tricked out 68. He is a very good fabrication guy. He is a Lateral-G member by the name of coolwelder62. Give him a call at his shop 785-594-7481
Scott is also the guy who performed ALL the fabrication work on Mizfits 69 Camaro that is now for sale at $185,000 unfinished.
Have a good one,
Rusty

Wow, that's really nice.. I might have to give him a call.

Here's the one from Firewheel Classics.. Hard to beat for $22 and it can be painted any color you wish. Nice people too.

http://picsorban.com/upload/plate.jpg

Personally I would like to have it done in mesh with a small frame. Don't the glass hoods have it in mesh...I thought I remembered seeing that? Perhaps your old hood Steve?

Yep, my old 4" Harwood hood had it in mesh.. looked GREAT. I do believe it was moulded into the hood.