When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
My Cowl Induction Hood was open (no door flapper that opens at WOT) and I used the stock 75 air cleaner with hood seal.
I got caught in a thunderstorm a couple of years ago driving home on the freeway.
When I got home I seen a small puddle of water in the base of the air cleaner. So no more open hood cowl, now it's plugged up.
Can't see where any performance issues come in to play since that cowl flapper was only designed to open at WOT, and I don't drive WOT. Pure GM hype for the average driver.
That, and in 76 (maybe 77) the Cowl Induction was gone.
Not sure that driving in rain would hurt a thing unless it was pouring on top of the dist or belts.
Most here wont take them out unless the weather is good, Sunday cruise etc. Have driven wtih no hood at all no problems...short commute to work but still..
I have a ls in mine and it looks like it'd drain water right on top the intake manifold/ throttle body. Right in front of that is my air filter. I'm not gonna be driving mine if it's storming outside but if i have gotten caught in a many showers while out. It happens.
I inserted Ford Mustang hood vents they fitted quite well and you can buy after market fiberglass one quite cheep. They look quite tidy from the inside as well.
Pzark, Where did you get the vender vents. I know this is an old post but I just came across it and I love the look. I was trying to figure out some venting for the front to help with downforce.
Interesting conversation. I am about to cut the dip or void area out of an L88 hood behind the radiator, in front of the hood carb duct box. The carb is essentially sealed at the front, cowl supplies air. I was attempting on our running car to figure out the area affected by the cowl air stack up by the windshield, and no vents there, at the back of the hood, but forward to help airflow exit, but also allow header heat to vent. Let me attempt a drawing.
Last edited by TCracingCA; Dec 23, 2023 at 06:47 PM.
