Circular Butterfly Valve Carburetor Scoop
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Junior Member
Joined: Nov 2008
Posts: 40
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From: Clarence, NY
Car: 1984 trans am
Engine: 1979 350
Transmission: 1972 TH-350
Axle/Gears: 7.625 in/3.23
Circular Butterfly Valve Carburetor Scoop
Hey guys, I was wondering if you thought this would look good on my car. The one I was thinking of getting was from summit: http://www.summitracing.com/parts/SUM-G3108-1/
Now, I am 17 in highschool, and my money is very limited (I don't have a job at the moment, but I'm getting one again soon). So, as much as I would like to, I won't have a blower underneath. I've got a mildly built 350 under a daytona hood right now. My air cleaner has a 1 in drop and needs the cowl. I was going to pick up a GTA hood (I think thats the one, flat with the strong lines and the vents in the front) and cut a hole for the scoop. So the scoop will be above the hood of course, but won't be super tall like most cars with these scoops. If needed, I could put in a spacer.
Now I know some people think that cars shouldn't look like this unless they have the power to back it up. The fact of the matter is, everything that I could do to increase performance for my budget has been done already by me or the original owner. So, because my money is so tight, I don't have the cash to go further with the engine, and frankly the brakes and rearend now need to be fixed up (before I go back to the engine, that is. Its a vicious cycle, ha).
Also, since I will have to replace the current hood, It won't be the same color. I don't have the money to repaint the whole car, although this summer I may try the infamous budget paint job. But for a while the car would have a discolored hood. So I was thinking I could get a pneumatic spray gun and paint it flat black.
Any comments or input would be appreciated, and if anyone is good at photoshop... that would be great too. Thanks.
Now, I am 17 in highschool, and my money is very limited (I don't have a job at the moment, but I'm getting one again soon). So, as much as I would like to, I won't have a blower underneath. I've got a mildly built 350 under a daytona hood right now. My air cleaner has a 1 in drop and needs the cowl. I was going to pick up a GTA hood (I think thats the one, flat with the strong lines and the vents in the front) and cut a hole for the scoop. So the scoop will be above the hood of course, but won't be super tall like most cars with these scoops. If needed, I could put in a spacer.
Now I know some people think that cars shouldn't look like this unless they have the power to back it up. The fact of the matter is, everything that I could do to increase performance for my budget has been done already by me or the original owner. So, because my money is so tight, I don't have the cash to go further with the engine, and frankly the brakes and rearend now need to be fixed up (before I go back to the engine, that is. Its a vicious cycle, ha).
Also, since I will have to replace the current hood, It won't be the same color. I don't have the money to repaint the whole car, although this summer I may try the infamous budget paint job. But for a while the car would have a discolored hood. So I was thinking I could get a pneumatic spray gun and paint it flat black.
Any comments or input would be appreciated, and if anyone is good at photoshop... that would be great too. Thanks.
Re: Circular Butterfly Valve Carburetor Scoop
DON"T DO IT ! ! ! !
its a waste of $219 bucks, you need that money for much better things then that.
The design of our cars are not ment for stuff like that.
It wont perform at all.
keep the cash for your paint or brakes.
its a waste of $219 bucks, you need that money for much better things then that.
The design of our cars are not ment for stuff like that.
It wont perform at all.
keep the cash for your paint or brakes.
Thread Starter
Junior Member
Joined: Nov 2008
Posts: 40
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From: Clarence, NY
Car: 1984 trans am
Engine: 1979 350
Transmission: 1972 TH-350
Axle/Gears: 7.625 in/3.23
Re: Circular Butterfly Valve Carburetor Scoop
Well my car is going to need some severe brake work (and tires) to pass inspection, so those will come first. And the paint looks shiny, it was painted in 2002. The car is performing right where I want it to be, without spending a lot of money on some N20 and t56 swap and ect. Now I want to spend my money on interior/exterior upgrades. I've got a great sound system I just need to hook up, and I already have new seats (4th gen), so there isn't much else I want to do there. What would you suggest I spend my money on instead?
Rather than discuss practicality, I was wondering how it would look. I was also going to put two Hella driving lights behind the grill inserts, and they are circular, so they would match the circles on the scoop.
I am pretty sure it will increase performance as well, its colder than a "cold air intake" and is ram air too. - unless your talking aerodynamics?
If your just opposed to it on looks thats one thing but please suggest something else for the money if thats where you take issue.
Thanks for the input
Rather than discuss practicality, I was wondering how it would look. I was also going to put two Hella driving lights behind the grill inserts, and they are circular, so they would match the circles on the scoop.
I am pretty sure it will increase performance as well, its colder than a "cold air intake" and is ram air too. - unless your talking aerodynamics?
If your just opposed to it on looks thats one thing but please suggest something else for the money if thats where you take issue.
Thanks for the input
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Joined: Aug 1999
Posts: 2,842
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From: Rowlett, TX
Car: 1988 GTA
Engine: 5.0 TPI
Transmission: T5
Axle/Gears: 9 Bolt, 3.45
Re: Circular Butterfly Valve Carburetor Scoop
It will look like poo, and you'll never get it to work right. Are you really prepared to cut a hole in your hood? And figure out how to hook up the linkage to it? And build an airbox that will make it functional?
If you really want to spend $200 bucks, get a set of subframe connectors.
If you really want to spend $200 bucks, get a set of subframe connectors.
Joined: Aug 2006
Posts: 12,812
Likes: 110
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: Circular Butterfly Valve Carburetor Scoop
there is one car around tgo somewhere, or maybe elsewhere i forget, that has this scoop on it and it looks terrible. Use the money on something else. and you will have to cut a hole in the hood to fit it, and if thats not bad enough, the engine in a 3rd gen is not centered in teh car, it site to the passengerside about an inch. So the hole in the hood and the scoop wont even be centered.
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Joined: Nov 2003
Posts: 1,598
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From: Davenport, Iowa
Car: Still a 3rd Gen
Engine: 450HP 355
Transmission: TH350
Axle/Gears: 9" with 4.11's
Re: Circular Butterfly Valve Carburetor Scoop
I'd just get a regular aftermarket cowl hood and make it functional..
https://www.thirdgen.org/forums/tech...cker-nuts.html
i think that's the one //<86TA>\\ was talking about...
https://www.thirdgen.org/forums/tech...cker-nuts.html
i think that's the one //<86TA>\\ was talking about...
Joined: Aug 2006
Posts: 12,812
Likes: 110
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: Circular Butterfly Valve Carburetor Scoop
I'd just get a regular aftermarket cowl hood and make it functional..
https://www.thirdgen.org/forums/tech...cker-nuts.html
i think that's the one //<86TA>\\ was talking about...
https://www.thirdgen.org/forums/tech...cker-nuts.html
i think that's the one //<86TA>\\ was talking about...
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Thread Starter
Junior Member
Joined: Nov 2008
Posts: 40
Likes: 0
From: Clarence, NY
Car: 1984 trans am
Engine: 1979 350
Transmission: 1972 TH-350
Axle/Gears: 7.625 in/3.23
Re: Circular Butterfly Valve Carburetor Scoop
Thanks for that picture- even after searching I couldn't find one.
I know I have to cut a hole in the hood- I think I said it before, I was going to get a gta hood off craigslist. I saw one a while back for 50 or so.
The hood I have right now already has a real cowl, I think its called a Daytona hood. I don't really like it, but I wasn't going to cut it up. Besides the scoop wouldn't work with the cowl very well.
As for the engine not being in the center, is that true? I don't know about that, because it would throw off the balance of the car. Anyway, I have a 79 chevy 350 in there, and I am pretty sure its centered. It looks centered. It sticks out and the air cleaner already has a drop, and it still wouldn't fit without the cowl.
It can't be that hard to hook up those linkages right? (famous last words...) But really the piece off the scoop that goes under the hood just hooks up to the throttle on the side of the carb, how hard can it be?
I don't have an imageshak account, but I think you can see pictures of my car on facebook:
http://www.facebook.com/photo.php?pi...&id=1577553908
I know I have to cut a hole in the hood- I think I said it before, I was going to get a gta hood off craigslist. I saw one a while back for 50 or so.
The hood I have right now already has a real cowl, I think its called a Daytona hood. I don't really like it, but I wasn't going to cut it up. Besides the scoop wouldn't work with the cowl very well.
As for the engine not being in the center, is that true? I don't know about that, because it would throw off the balance of the car. Anyway, I have a 79 chevy 350 in there, and I am pretty sure its centered. It looks centered. It sticks out and the air cleaner already has a drop, and it still wouldn't fit without the cowl.
It can't be that hard to hook up those linkages right? (famous last words...) But really the piece off the scoop that goes under the hood just hooks up to the throttle on the side of the carb, how hard can it be?
I don't have an imageshak account, but I think you can see pictures of my car on facebook:
http://www.facebook.com/photo.php?pi...&id=1577553908
Supreme Member
Joined: Jan 2004
Posts: 1,206
Likes: 4
From: Western Ky
Car: Z/28..39 Plymouth truck in progress
Engine: S/B
Transmission: Manual
Re: Circular Butterfly Valve Carburetor Scoop
As for the engine not being in the center, is that true? I don't know about that, because it would throw off the balance of the car. Anyway, I have a 79 chevy 350 in there, and I am pretty sure its centered. It looks centered. It sticks out and the air cleaner already has a drop, and it still wouldn't fit without the cowl.
Yes the engine is off center......unless this car isnt a daily/regular driven car and has a garage you really dont want a hole in your hood.
Thread Starter
Junior Member
Joined: Nov 2008
Posts: 40
Likes: 0
From: Clarence, NY
Car: 1984 trans am
Engine: 1979 350
Transmission: 1972 TH-350
Axle/Gears: 7.625 in/3.23
Re: Circular Butterfly Valve Carburetor Scoop
Being the skeptical young punk that I am, I still didn't "really" believe you. So I went out and measured, and sure enough, the engine is in indeed about an inch and a half to the passenger side. I did this by measuring from the edge of the fender to the wing nut on the top of the air cleaner. There were about thirty inches on the passenger side, and 31 and a half on the drivers side! Why would they do that? The engine is the heaviest single component of the car, and therefore directly affects the center of mass. Why build a car with the engine not centered?
Yeah the car has a garage, and isn't driven in the winter. However I am going to utah for college this summer, and I don't know what the garage situation will be there. But, what's the big difference between having a hole in the hood and the cowl? I have a hood with vents on the side of the cowl, and water can drip down in there as it is. If water drips down there while the engine is running, it will just steam off right? I forgot where, but I think it was on here somewhere, I read that having a hole in the hood would just make the engine dirty faster, but thats it.
So there already are holes in the hood (in the back for the cowl and on the sides for the vents), and it does fine now. What would the water do? I'm pretty sure the ignition is sealed, and I don't think it will get in the intake...
Again, thanks for all the input guys.
Yeah the car has a garage, and isn't driven in the winter. However I am going to utah for college this summer, and I don't know what the garage situation will be there. But, what's the big difference between having a hole in the hood and the cowl? I have a hood with vents on the side of the cowl, and water can drip down in there as it is. If water drips down there while the engine is running, it will just steam off right? I forgot where, but I think it was on here somewhere, I read that having a hole in the hood would just make the engine dirty faster, but thats it.
So there already are holes in the hood (in the back for the cowl and on the sides for the vents), and it does fine now. What would the water do? I'm pretty sure the ignition is sealed, and I don't think it will get in the intake...
Again, thanks for all the input guys.
Supreme Member
Joined: Jan 2004
Posts: 1,206
Likes: 4
From: Western Ky
Car: Z/28..39 Plymouth truck in progress
Engine: S/B
Transmission: Manual
Re: Circular Butterfly Valve Carburetor Scoop
If this is going to be a sunny day/weekend car then go for it, its all about what you like.....water wont hurt anything while driving but when the car is sitting asn it rains you will have pockets of water sitting in all of the nooks and crannys rusting everything between that and the dirt/rust/corrosion that will result in everyday usage it will get old real fast. Even on a good day the aluminum on that scoop starts oxidizing about 2 min after you get done polishing it...also the repeated moisture will affect your electrical connections to a higher degree.
If you asked I would of shared and saved you some work lol, you can see how it sits slightly to the pass. side

If you asked I would of shared and saved you some work lol, you can see how it sits slightly to the pass. side

Last edited by flrtin1; Jan 24, 2010 at 02:47 PM.
Thread Starter
Junior Member
Joined: Nov 2008
Posts: 40
Likes: 0
From: Clarence, NY
Car: 1984 trans am
Engine: 1979 350
Transmission: 1972 TH-350
Axle/Gears: 7.625 in/3.23
Re: Circular Butterfly Valve Carburetor Scoop
I know aluminum doesn't rust (like steel does), but when it oxidizes it forms a thin layer of aluminum oxide that is (supposedly) invisible and protects the surface. Now it didn't take me long to learn that what they teach in school doesn't always apply to the 'real world,' so how badly would the oxidation affect the look of the scoop?
The one from summit is available in polished and painted (black). I imagine the paint would prevent the oxidation, but I do like the look of the polished. So could you paint a coat of clear over the polished aluminum?
as for the measuring, all I did was get up, pop the hood, and measure away. Its sitting in the garage, waiting until spring. The hardest part was finding the tape measure, haha. And I can see now how it sits to the left a bit, and while it is noticeable, it doesn't look bad.
The one from summit is available in polished and painted (black). I imagine the paint would prevent the oxidation, but I do like the look of the polished. So could you paint a coat of clear over the polished aluminum?
as for the measuring, all I did was get up, pop the hood, and measure away. Its sitting in the garage, waiting until spring. The hardest part was finding the tape measure, haha. And I can see now how it sits to the left a bit, and while it is noticeable, it doesn't look bad.
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