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air foil worth it?

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Old Feb 2, 2009 | 02:16 PM
  #1  
criesofthepast's Avatar
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From: Ft. Worth, TX
Car: 87 Iroc-Z
Engine: 305 5.0
air foil worth it?

http://tpiparts.net/inc/sdetail/1340 does this thing do much?
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Old Feb 2, 2009 | 03:22 PM
  #2  
gurkgurkgurk's Avatar
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From: SF bay area
Car: 86 Camaro iroc-z28
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: air foil worth it?

10 horsepower outta the box


well little stuff like that wont make much of a difference when driving around town. but that added up to some more small modifications, like a ram air setup, de screened MAF, siamesed intake runners and plenum, then you might feel it
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Old Feb 2, 2009 | 03:36 PM
  #3  
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From: Dumfries, Va
Car: '89 Formula Firebird
Engine: LSX-451 / 705HP
Transmission: T-56
Axle/Gears: Moser Ford 9" with 4.30
Re: air foil worth it?

Yes very noticeable.
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Old Feb 2, 2009 | 04:24 PM
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Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Re: air foil worth it?

Unless you have some serious mods done to your intake or the airfoil is only about $20 it's a waste of money.
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Old Feb 2, 2009 | 05:00 PM
  #5  
criesofthepast's Avatar
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From: Ft. Worth, TX
Car: 87 Iroc-Z
Engine: 305 5.0
Re: air foil worth it?

Yea I figured lol thanks
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Old Feb 2, 2009 | 05:10 PM
  #6  
TA's Avatar
TA
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From: Carson, CA
Car: '88 GTA, 90 Formula
Engine: 5.7 TPI, fed growth hormones
Transmission: 700r4 4u2?
Axle/Gears: 9bolt
Re: air foil worth it?

Originally Posted by Viprklr
Unless you have some serious mods done to your intake or the airfoil is only about $20 it's a waste of money.
I have actually seen just under 12 RWHP by putting one of these in, however it was on a very rad 396CID stealthram engine with a stock throttle body (not many people likely to do that!).

If the stock throttle body is your bottleneck, it works wonders. However, if your throttle body is the major bottleneck, you'd be much smarter upgrading to a bigger throttle body, which have these things made into them.

TA
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Old Feb 3, 2009 | 01:34 AM
  #7  
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From: Northeast CT
Car: '89 IROC-Z
Engine: LSx
Transmission: T-56
Axle/Gears: 3.42
Re: air foil worth it?

Like stated above, its just a supporting mod, by itself its pretty much useless, but put in with a some other decent engine mods and it might do you some good.
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Old Feb 3, 2009 | 03:05 AM
  #8  
drknow90rs_ss@y's Avatar
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From: Wittman,Az
Car: 86 IROC-Z, '71 RS
Engine: 305 TPI/ 350
Transmission: 700R4/TH350
Re: air foil worth it?

By itself, on a stock engine, pretty much worthless...
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Old Feb 3, 2009 | 10:38 AM
  #9  
305sbc's Avatar
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From: Fairview Heights Illinois
Car: 1986 Irocz
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.25:1
Re: air foil worth it?

I still think there should be a sticky for airfoil questions.

https://www.thirdgen.org/forums/tpi/...i-airfoil.html
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Old Feb 3, 2009 | 11:01 AM
  #10  
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From: Bright, IN
Car: '86 Bird, 96 ImpalaSS, 98 C1500XCab
Engine: LG4, LT1, L31
Transmission: 700R4, 4L60E, 4L60E
Axle/Gears: 3.73 Tors, 4.88 spool, 3.73 Eaton
Re: air foil worth it?

I have one I no longer use since upgrading to a bigger TB with the splitter already shaped as an airfoil.
If you plan to get one anyway, $20 + shipping and it's yours. PM me.
It's a TPIS, which is a little better looking piece than the one shown in your link.
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Old Feb 3, 2009 | 05:36 PM
  #11  
Michael91z28's Avatar
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From: Merritt Island, FL
Car: 1991 Chevrolet Camaro Z28
Engine: 5.7L 350
Transmission: 700R4
Axle/Gears: 2.73
Re: air foil worth it?

Honestly I did notice a difference when I first put it in. Car seemed to pull a little harder. Nothing major, but I could tell the difference.
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Old Feb 4, 2009 | 12:27 AM
  #12  
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: air foil worth it?

I've always said its better to get a 52mm throttle body with an airfoil already in it.
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Old Feb 13, 2009 | 10:38 PM
  #13  
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From: Norwalk, CA
Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: air foil worth it?

So its a good upgrade
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Old Feb 16, 2009 | 10:39 AM
  #14  
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From: PA
Car: '92 Camaro Z28
Engine: 305 TPI
Transmission: Built 700R4
Axle/Gears: Unknown 9 Bolt Posi, 3.73s
Re: air foil worth it?

I like mine, but I also have a custom made airbox.
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Old Feb 16, 2009 | 06:33 PM
  #15  
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From: Norwalk, CA
Car: 91Z28
Engine: 5.7 ls1
Transmission: 4l60e
Axle/Gears: 3.42
Re: air foil worth it?

Originally Posted by Z2EIGHT
I like mine, but I also have a custom made airbox.
Can you tell me what you have for the custom air box i want one for my car
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