69 Camaro front valance and spoiler on a 67 c10?

[skorpioskorpio]

Originally Posted by Possmguts

Well IF the holes are piped directly to the intake then they would serve nicely as ram air intakes... if they just are open holes to the engine bay then I see your question.

Yea, but that was kind of my point, all those "Ram Air" systems from the '60s didn't really work very well.

[no1udknow]

Originally Posted by skorpioskorpio

Yea, but that was kind of my point, all those "Ram Air" systems from the '60s didn't really work very well.

Ram air does not lend itself well to any carbureted application really. Unfortunately when you ram air into a caburetor venturi with such force, the pressure in the venturi actually increases instead of dropping like it is supposed too. There becomes too much air and it cant get out of the way fast enough and forces itself into any opening it can find including the jets and the float bowl. Honda and Kawasaki figured out that they could overcome this by piping a line from the ram air tube to the float bowls on their motorcycles, thus increasing the pressure in the bowls as the air pressure in the ram increased. Allowing the venturi effect to work properly. Cowl induction on the other hand takes advantage of a semi stable pocker of air at the base of the windshield. While all the air is turbulent flowing under and over the hood, the pressure of the pocket of air at the base of the window was more like the air would be if the car weren't moving which makes for better conditions for the venturi effect of the carb......

wow that was a ramble sorry.... I just love performance technology....

[skorpioskorpio]

Ram Air has all kinds of issues, the ill effects of pressurizing carburetors is just one of them. In most of the '60 applications of forward facing hood scoops air pressure and density were all over the place as humidity, altitude, attitude, and temperature changed, basically guaranteeing an inconsistent air fuel mixture. Same holds true, to a lesser degree, of electronic fuel injection, most of the OEM PCUs are not really fast enough to adapt to wildly changing intake air quality which is what a crude velocity based attempt at free forced induction gives you. Best thing you are going to be able to do for consistency is to give an engine a cool air source without turbulence at predictable pressures. To try and force some inconsistent air source into a engine based on aerodynamic guesses will lead to combustion that is constantly varying between rich (dirty) and lean (destructive).

...and yes that is why cowl induction type scoops or rearward facing scoops basically replaced all other types.

[Possmguts]

Originally Posted by skorpioskorpio

Ram Air has all kinds of issues, the ill effects of pressurizing carburetors is just one of them. In most of the '60 applications of forward facing hood scoops air pressure and density were all over the place as humidity, altitude, attitude, and temperature changed, basically guaranteeing an inconsistent air fuel mixture. Same holds true, to a lesser degree, of electronic fuel injection, most of the OEM PCUs are not really fast enough to adapt to wildly changing intake air quality which is what a crude velocity based attempt at free forced induction gives you. Best thing you are going to be able to do for consistency is to give an engine a cool air source without turbulence at predictable pressures. To try and force some inconsistent air source into a engine based on aerodynamic guesses will lead to combustion that is constantly varying between rich (dirty) and lean (destructive).

...and yes that is why cowl induction type scoops or rearward facing scoops basically replaced all other types.

with all that being said... then how in the world does a carbureted turbo vehicle even work? Would a blow through set up not be the same principle as what you're saying dont work? or even draw through for that matter?