JD434

I want to build a ram air/cold air intake system for my C3.
Has anyone built or seen this before?
I can not fit a full size ram air cleaner on top of my carb though because of all the selenoids on my Pro Fogger System.
All thoughts appreciated.

tshort

GrandSportC3 built an enclosure that used the cowl low pressure area.

stickboy

The later c3's had ducting to pull the air from in front of the radiator, it probably had some ram effect.

73, Dark Blue 454

Or, the cowl induction set-up of 73-75 worked great. Might be a bit expensive...

JD434

What I was thinking of doing was building a carb hat similar to a supercharger hat, but have two 3" pipes coming off it, and then somehow run ducting pipes down to two scoops with air filters that would provide a cold air ram effect.
Any thoughts?

SpyderD

Any plan to get cold air into the engine is a good idea. Generally, ram air effects are innefective for anything less than 120 MPH or so. I've seen pictures here of some folks with cowl air set ups (I have one myself but the carb is not isolated from the engine) that work with the high pressure around the cowl area forcing in the cool ambient air.

So don't rely on any "supercharged" effect from ram air unless you constantly drag race over 100MPH, but go for anything that will bring cool air in.

Highhat

While one could also say it's a heat shield, this worked well for me under my L-88 hood:

Bee Jay

My '79 came with a daul snorkel air cleaner with ducts to the top of the radiater. The stock Air Cleaner won't fit on top of the LT1/Z28 intake so I'm running an open element 14" with drop base and open top. What I would love to do is some kind of variation on the '82 Corvette hood. It picked up air from in front of the radiator and sealed against the cross ram tbi's. I was thinking mine could pick up in front of the radiator and at the base of the windshield. All I need is a stock 75-79 hood to play with.
Bee Jay

glen242

I am screwing around with a '79 dual snorkle air cleaner that will fit under the hood of my '76 with and Edelbrock RPM performer intake and Q-Jet. Stock '76 air filter is 3 1/2" high X 12". Using a Trans Am lid, I think I can fit a 3" high X 12" filter under the stock hood and utilize the cold air induction.

I got tired of using the drop base cleaner and overrated K&N filter sucking in hot air.

If I get this thing working, I am going to schedule a chassis dyno run and check out both the open element and the dual snorkle. I am not sure of the accuracy of the results of the tests on a dyno, as the use a humongus fan to blow through the grill opening, with the hood open, during the runs.

danboback

That is really

Corey_68

Just ther OEM L88 cold air setup here, seems to do the job.

Kid Vette

Why reinvent the wheel?

84rzv500r

Approx 1% increase in HP for every 11 degree drop in inlet air temp...

High Pressure area at base of windshield or Air Dam

I'm looking at a couple options for my project...

NACA scoop in the hood feeding the Ramjet intake with a box around it... With a couple of "Caution: Jet Intake" Stickers



Or a duct in the license plate hole feeding one of these...




Wait a minute... I'm getting the strange urge to paint my car Yellow drop in a SBC and find some Titanium rotors...

Yellow73SB

Was this directed at me?

Jason Staley

Here's a cowl induction system I fabricated using a stock-car air cleaner and modified it to fit over the HEI distributer. It seals against the hood, and I cut two long slots in the stock 76 hood under the "grill" area.

70 LS1

If you want to put a hat on the carb and run tubes, maybe go up and over the radiator like I did.

Glensgages

..... back-when my Z28 ran consistent 13-fifties/sixties at 105, one day I accidently didn't remove the air-cleaner (used for towing to/from on my open-trailer ) and install the air-pan, that was sealed to the OEM hood-scoop:
after a pair of 13-seventy/103 MPH runs, I realized my error (dummen-kophen ), made the swap, and immediately ripped-of a 13.59 @ 105 time-shot.....

just my experiences.....

gliot1

I just read a study of ram air vs. cowl induction...which is better? The end conclusion was that both were just as effective. One uses vacuum; one uses pressure, but the end resulting HP was the same.

gavanm01

Can you please post a link to that study or was this "quiet time" reading in the bathroom?

Silver00V6Camaro