dtianen

So, as 99% of you already know 1975 was the last year for rear cowl induction. That's my car. From looking at the "aim" it looks to me that there is a small loovered door inside the hood. I also saw on the drivers side of the hood a wire that runs up the side and then goes under the insulated hood blanket in what I believe is in that same area.
So, how and what actuates this door to open and does it only open when secondary's are open?
Definitely not a wrench guy but trying to learn more.
Thanks guys

Tom73

Look here on the 73 Spot: http://www.73spot.com/index_stats_files/cowlintake.htm

dtianen

Outstanding!!! Exactly the kind of help I was looking for. I can always count on forum members for good help and advice. Makes the learning process easier and helps me to understand my car better. Thanks

lowbuck72

I never could quite understand that cowl induction, seems to me to be more of a gimmick. Mopar had a similar device. A cold air intake makes more sense to me with a forward facing functional hood scoop. At least the Pontiac and Buick ram air option made some sense. However, I do understand wanting to restore all the original equipment back to operating condition, practicality aside.

74 LS4-454

The 82's have a similar setup only the cold air comes in from the front of the hood as opposed to the rear of the hood on your 75. I eliminated my set-up and have cold air all of the time, not just with WOT acceleration. More responsive, a little louder... but you may also pick up more items in the process, especially for me with the front hood air feed. I still need to screen the inlet opening, and will do the same to my 74 if I go that route.

Tom73

You have a high pressure area at the base of the windshield, great for supplying air to the engine. NASCAR uses basically the same system on the Cup cars.

mike48750

Nice web site, thanks for posting the link. Added to favorites. Mike