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I decided to start a new tread on the heat extractor for a quick instructions/review, because the other tread got to be a little too long. The heat extractor I ordered was through Summit Racing and made by TRACKSPEC. It measured supposedly10.5x15.5, they had also carried a bigger one which measured 15.5x15.5. Cost was was a little over $230, which seemed a little pricey. I took a risk ordering it because this vent was made for the high rise L88 hoods and mine was a stock hood. Luckily I had also ordered the 2" air filter for my Edelbrock set up. After measuring a little over 15 times, my son and I decided to take hood off the car and start taping up section with blue painters tape in the area we were going to cut. Then on top of the tape we placed the enclosed template, which we also taped up using the blue painters tape. We used a Dremel with a roto type drill bit which cuts. We decided to cut on the inside lines as a precaution. This turned out to be a good idea, because it came out pretty close and fit kind of snug. Then we sanded the edges with Dremel as well. The holes they made on extractor were a little small so we made the holes a little bigger, by drilling through the back of the extractor, so that we didn't mess up paint on extractor. While extractor was in place and the remainder of tape was still on, we drilled the holes where they needed to go. They included some black rivets with the extractor, but I wanted to be able to remove it in case I had to. So I purchased some Black torx screws at the nearest ACE Hardware. Fyi, I came down 14.1" from top of the hood(windshield area) to top of the 2 corners of the extractor and centered it in the middle of hood. In my opinion, I think it added some looks to the car while at the same time helping vent out some of the heat. After a suggestion made by one of the forum members I added some yarn strings to the top of the hood vents and went out for a cruise to see where the air would go after it came out of the hood vent. It turns out that some of the vented air comes back in to the top side vents of the car. Some would say that it may be fail, but in my opinion after the air comes out of the vents it has to mix with fresh air before it goes back in so I am going to count it as a win. Also keep in mind that when your car is at a standstill/example: traffic light or after you finished driving it, the air is evacuated a little bit quicker since hot air rises. I have included a small video on the test as to where air would go. Video footage shot by a novice, so have mercy. LOL! Link in blue. TRACKSPEC Hood vent
Did you figure out where the low pressure area is on your hood with what ever front to rear rake is? Way back when I was testing for driving over 200 mph at the Bonneville Salt Flats I taped yarn all over my hood and then videoed the air flow. The closer you get on the hood to the windshield is a higher pressure area of basically stagnet air. Like when you are driving in the rain and you can see water beads that just sit still on a nicely waxed hood.
You could attach yarn to your vents and see if you actually have air flow out of the engine compartment.
Did you figure out where the low pressure area is on your hood with what ever front to rear rake is? Way back when I was testing for driving over 200 mph at the Bonneville Salt Flats I taped yarn all over my hood and then videoed the air flow. The closer you get on the hood to the windshield is a higher pressure area of basically stagnet air. Like when you are driving in the rain and you can see water beads that just sit still on a nicely waxed hood.
You could attach yarn to your vents and see if you actually have air flow out of the engine compartment.
I'm trying to just keep it stable around 100mph, I haven't put strings on it yet as I am still doing body work. My high rise hood releases air pressure in the back of the windshield, my thinking (and I could be wrong) is with the vent it will direct the air out coming through the radiator over the hood. I have also grafted a front splitter to draw more air up into the radiator and create more down force. My long term goal is to make it handle and drive to keep up with newer cars to an extent.
I would believe you have more knowledge then I do. I do believe I saw one of your posts that you drove in the Silver State classic a time or two.
Last edited by stingrayiii67; Jun 19, 2024 at 02:18 AM.
I'm trying to just keep it stable around 100mph, I haven't put strings on it yet as I am still doing body work. My high rise hood releases air pressure in the back of the windshield, my thinking (and I could be wrong) is with the vent it will direct the air out coming through the radiator over the hood. I have also grafted a front splitter to draw more air up into the radiator and create more down force. My long term goal is to make it handle and drive to keep up with newer cars to an extent.
you need to start your own post on stability as speed increases.
To the OP i admire your modification work. My aftermarket hood came with vents. The first thing that I noticed is when stopped at a light I can see heat waves rising out of the vents.
TRACKSPEC Heat Extractor install
, my son and I decided to take hood off the car and start taping up section with blue painters tape in the area we were going to cut. Then on top of the tape we placed the enclosed template, which we also taped up using the blue painters tape. We used a Dremel with a roto type drill bit which cuts. We decided to cut on the inside lines as a precaution. This turned out to be a good idea, because it came out pretty close and fit kind of snug. Then we sanded the edges with Dremel as well. The holes they made on extractor were a little small so we made the holes a little bigger, by drilling through the back of the extractor, so that we didn't mess up paint on extractor. While extractor was in place and the remainder of tape was still on, we drilled the holes where they needed to go. They included some black rivets with the extractor, but I wanted to be able to remove it in case I had to. So I purchased some Black torx screws at the nearest ACE Hardware. Fyi, I came down 14.1" from top of the hood(windshield area) to top of the 2 corners of the extractor and centered it in the middle of hood. In my opinion, I think it added some looks to the car while at the same time helping vent out some of the heat. After a suggestion made by one of the forum members I added some yarn strings to the top of the hood vents and went out for a cruise to see where the air would go after it came out of the hood vent. It turns out that some of the vented air comes back in to the top side vents of the car. Some would say that it may be fail, but in my opinion after the air comes out of the vents it has to mix with fresh air before it goes back in so I am going to count it as a win. Also keep in mind that when your car is at a standstill/example: traffic light or after you finished driving it, the air is evacuated a little bit quicker since hot air rises. I have included a small video on the test as to where air would go. Video footage shot by a novice, so have mercy.
LOL! Link in blue.
