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Aero vs SS hood scoop |
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tomslik
AMC Addicted Joined: Mar/07/2008 Location: Colorado Status: Offline Points: 680 |
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http://i472.photobucket.com/albums/rr84/troublemaker427/TroubleMaker1.jpg
http://farm8.staticflickr.com/7154/6738579197_0da24b42a5_z.jpg if you have a 64-69 American, I think these would be an interesting and functional option |
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67 american 290/4speed |
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401MATCOUPE
AMC Addicted Joined: May/20/2010 Location: Salisbury, MD Status: Offline Points: 5367 |
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I remember reading about the Trans Am Hood Scoop on T/A Challenger...the reason to get inlet of scoop off of hood was the "boundry layer" effect. And it looks cool too
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Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar) 68X,GoPac,390,4sp,52A 69X,GoPac,390,4sp,64A 70X,GoPac,390,4sp,87A,8 70X,GoPac,390,4sp,BBO,8 70 Jav SST,390,AT,BSO 74MatX,401,AT,Prototype 74MatX,401,AT |
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Aljav
AMC Addicted Joined: Jul/18/2007 Location: Wisconsin Status: Offline Points: 1037 |
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69 AMX 9.86 132 mph 71 JAV/AMX and 69 Javelin, .. NAMDRA member #1106
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AMC instigator
AMC Addicted Joined: Sep/13/2009 Location: Cook Minn. Status: Offline Points: 1265 |
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Sometimes to make things look just right it takes a small bite out of the time slip. However if it makes you smile at the end of the day it is worth it. SH
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White70JavelinSST
Supporter of TheAMCForum Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4867 |
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More history lessons;
Not that this is of any value to a drag car, but I remember reading that the ram air hood that was available for the 70 Javelins and on all 70 AMXs robbed the engine of horsepower for Trans Am racing purposes. As mentioned by Dragdak, they determined the scoop being in the boundary layer made the air bypass the inlet. Donohue and Penske determined that an advantage and horsepower gains came from a reverse duct system air cleaner that tapped into the grille like area at the cowl in front of the windshield. The windshield created a high pressure area that the duct tapped into. This high pressure area acted like a power adder for the engine. I always wondered if this would work on a drag car too?
At some point in time drag cars did begin to take aerodynamic tips from road racing cars and began to look some what more like their road racing counterparts. That was when the Prostock guys realized that cars low to the ground, and no air going underneath, like road racing cars, where faster and safer (didn't tend to get airborne). Pretty soon many other classes took the que and followed suit.
Interestingly, "that little scoop" under the P-51 Mustang that Dragdak talks about developed thrust that enhanced the Mustang's speed. The "scoop" covers the radiator. The speed boost gained for the airplane was analyzed as the expansion of cold air as it became hot while passing through the radiator then out the back of the scoop, almost like thrust from a jet engine.
Armand
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70 Javelin SST, second owner, purchased 1972
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dragdak
AMC Apprentice Joined: Dec/15/2013 Location: Minnesota Status: Offline Points: 106 |
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