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09-27-2012, 08:52 AM
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#1 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Air Dams
Looking for pics of air dams on 67-72's
I'm looking at fabbing one up to see if I can get a mpg improvement.
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig |
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09-27-2012, 09:44 AM
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#2 |
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Senior Member
 
Join Date: Dec 2001
Location: Lexington,NC
Posts: 503
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Re: Air Dams
Here is a picture I found. I think you can buy the air dams for later model Chevy trucks. They will fit with minor mods.
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68  C-10 Custom LWB307 V8 Lexington,NC davideowens@lexcominc.net God Bless America |
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09-27-2012, 01:18 PM
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#3 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Air Dams
I have one but doubt it gets u anymore MPG.
These were taken as I installed the new grille. It's plastic so it can mount pretty easy anywhere you like.    
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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09-27-2012, 01:25 PM
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#4 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Re: Air Dams
I'm thinkig of fabbing a larger dam from aluminum, I think it would help milage.
These small ones posted look nice, but your right, they would not effect milage.
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig |
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09-27-2012, 02:19 PM
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#5 |
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Junior Member
Join Date: Jul 2002
Location: Scottsdale, AZ
Posts: 1,700
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Re: Air Dams
I was going to try one for a 88-98 chevy truck:
http://67-72chevytrucks.com/vboard/s...d.php?t=423059
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"I was patina when patina wasn't cool." 1973 Cheyenne SWB Sunset Gold / Frost White / Saddle |
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09-27-2012, 02:44 PM
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#6 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Re: Air Dams
Thanks for the link!
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig |
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09-27-2012, 04:47 PM
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#7 | |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Air Dams
Well I'm interested in how it gets u better MPG.
If these so called little ones don't help how in the world will a bigger one help when it will be holding more air back and making the truck push air more. I know these trucks are not the best on air dynamics so please educate me on this. Please don't take this wrong I just like to know how. Just another thought. The one on mine is plastic and I have hit it more times than I can remember. If you go much bigger u will be hitting it on everything if the truck is lowered. Quote:
My 2 cents worth anyway. Good luck with it though.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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09-27-2012, 05:28 PM
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#8 |
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Just a car guy
Join Date: Feb 2006
Location: New Washington, IN
Posts: 991
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Re: Air Dams
It would improve mpg the same way lowering a car does, by moving air over it instead of under.
I can't back it up with data, but it was suggested to me by some guys at pro-touring.com Posted via Mobile Device
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1955 belair Blown Pro Street cruiser 1971 Camaro Pro Touring 1973 Vega Drag Car 1970 C20 tow rig |
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09-27-2012, 06:03 PM
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#9 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: Air Dams
OK, I hope your right. Just remember the lower it is the more u will scrub it.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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09-27-2012, 06:30 PM
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#10 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,547
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Re: Air Dams
A properly built air dam will help mileage in two ways.
Put in the right spot and low enough it creates a low pressure area behind it. It aids aerodynamics as less high pressure air is being rammed under the vehicle. The low pressure area behind it aids cooling. More high pressure air will flow thru the rad and out the bottom of the truck behind the dam. Better cooling, increased timing helps in mileage. Hot motors don't like lots of timing. Cooler ones do. Beleive it or Don't!! |
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