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Replacement Air Dam

Old Jun 3, 2024 | 05:05 PM
  #1  
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From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Replacement Air Dam

Just like the title says, where does a guy get another one in decent shape?? I was backing out of a buddy's place and mine ripped right off but the bolts stayed in place. I've spotted a few used ones on ebay but even they look questionable. Are new ones still out there decently priced?? Also how big are these things supposed to be? Mine has a really mean curve to it and there's maybe 2 inches left of it so I'm assuming it's time to replace it anyway and it's about as thin as a piece of paper.
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Old Jun 4, 2024 | 06:31 PM
  #2  
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Car: 89' Firebird / 87' Formula
Engine: 3.4 / 5.0
Transmission: 700-R4
Axle/Gears: 3.42 / 3.42
Re: Replacement Air Dam

I got a brand new unit off of flea bay

1985-1990 Pontiac Firebird Formula Trans Am Front Lower Air Dam New Reproduction | eBay
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Old Jun 4, 2024 | 06:38 PM
  #3  
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From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: Replacement Air Dam

Originally Posted by 1989karr
Hmmmm I must have typed something seriously wrong because none of the new stuff showed up for me. But this link shows all kinds of new units. Maybe it's the app idk
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Old Jun 4, 2024 | 07:01 PM
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From: Hawaii
Car: 89' Firebird / 87' Formula
Engine: 3.4 / 5.0
Transmission: 700-R4
Axle/Gears: 3.42 / 3.42
Re: Replacement Air Dam

I literally just typed in "Trans Am Air dam" but sometimes in the app you need to scroll la bit to find things
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Old Jun 4, 2024 | 07:11 PM
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Re: Replacement Air Dam

Eeeeeeezzzzzzzyy to make one out of 18-wheeler mud flap material. Not only is it cheeeeeep, butt also, it bends out of the way in situations like yours.

Make it so that it goes to about 1½ - 2" off the ground. The tradeoffs that come with height variation should be obvious enough.
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Old Jun 5, 2024 | 05:48 AM
  #6  
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From: Central Michigan
Engine: SBC Dart 400 Holley 750 Carb
Transmission: 700R4
Axle/Gears: 28 spline 323 gears
Re: Replacement Air Dam

https://www.hawksmotorsports.com/cam...iator-air-dam/
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Old Jun 5, 2024 | 08:08 AM
  #7  
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: Replacement Air Dam

If you didn't rip through the bolt holes you can just use a larger washer and bolt it back in.
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Old Jun 5, 2024 | 03:34 PM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Replacement Air Dam

GM parts book calls them "deflector" so try air deflector in searches as well.
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Old Jun 5, 2024 | 06:54 PM
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From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: Replacement Air Dam

Thanks guys for the suggestions. I managed to get one from a GM parts Depot on sale. $100 CAD shipped
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Old Jun 6, 2024 | 01:59 AM
  #10  
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From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: Replacement Air Dam

Originally Posted by sofakingdom
Eeeeeeezzzzzzzyy to make one out of 18-wheeler mud flap material. Not only is it cheeeeeep, butt also, it bends out of the way in situations like yours.

Make it so that it goes to about 1½ - 2" off the ground. The tradeoffs that come with height variation should be obvious enough.
What happens when the height is say only 1 inch off the ground?? Does it kinda defeat the purpose of it??
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Old Jun 21, 2024 | 08:21 PM
  #11  
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Car: 1986 TRANS AM
Engine: LB9
Transmission: 700R4
Re: Replacement Air Dam

Yes Iroc Z-28 did it better.

Last edited by Extrafitkid; Jun 21, 2024 at 08:24 PM.
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Old Jun 22, 2024 | 09:59 AM
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Re: Replacement Air Dam

What happens when the height is say only 1 inch off the ground??
​​​​​​​Hits stuff
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Old Jun 22, 2024 | 10:01 AM
  #13  
thatsupnow's Avatar
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From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: Replacement Air Dam

Originally Posted by sofakingdom
​​​​​​​Hits stuff
Lol. Yea there's that too but would it be any kind of benefit or no??
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Old Jun 22, 2024 | 10:42 AM
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Re: Replacement Air Dam

I would think, the closer to the ground it is, the better it would work. You'd probably want it as low as you could stand it without it getting torn off which would obviously reduce its value significantly. Hard to say how much difference there'd be between say 2" and 1" in just pure effectiveness. It creates both high pressure in front of it and low pressure behind it, so it drives airflow through the rad from both sides.
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Old Jun 22, 2024 | 10:44 AM
  #15  
thatsupnow's Avatar
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From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: Replacement Air Dam

Originally Posted by sofakingdom
I would think, the closer to the ground it is, the better it would work. You'd probably want it as low as you could stand it without it getting torn off which would obviously reduce its value significantly. Hard to say how much difference there'd be between say 2" and 1" in just pure effectiveness. It creates both high pressure in front of it and low pressure behind it, so it drives airflow through the rad from both sides.
Alrighty I'll see what happens when I finally get it put on the car
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Old Jun 23, 2024 | 12:18 AM
  #16  
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From: SW Florida
Car: 1986 TRANS AM
Engine: LB9
Transmission: 700R4
Re: Replacement Air Dam

I had this on my TA 1985 back in 1989. Deep curves scratch..... Inclines sometime scratch. So what its durable somewhat flexible will take the abuse it. It was worth its weight in Gold in keeping the engine cooler engine Temp.
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