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 Post subject: Drag Coefficients?
PostPosted: Fri Jan 20, 2006 3:39 pm 
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Turbo EFI
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Joined: Tue Feb 18, 2003 7:34 am
Posts: 2479
Location: Lubbock, Texas
Car Model: 1964 Plymouth Valiant V200 Sedan
Does anyone have any aero drag coefficients (Cd) and cross-sectional areas for various A-bodies? I'm particularly interested in '64 Valiant four doors, but curious about all of them.

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"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO


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 Post subject:
PostPosted: Fri Jan 20, 2006 4:12 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6291
Location: So California
Car Model: 64 Plymouth Valiant
I think the Cd is something like that of a brick............


From my desktop drap program
66 Nova 26.0 sqft Cd 0.40
64 Dodge 28.7 Cd 0.41
69 Camaro 25.0 Cd 0.38
67 Chevelle 28.4 Cd 0.43

I'd say something like the Nova's sqft and depending on body a Cd .40-.43

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

8)


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 Post subject:
PostPosted: Fri Jan 20, 2006 4:43 pm 
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Board Sponsor & SL6 Racer
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Joined: Fri Nov 08, 2002 4:48 pm
Posts: 5835
Location: Burton BC canada
Car Model:
Its funny how it goes.....its a no brainer that my GF Eagle Talon TSI AWD is .290 Cd....but who would figure my 91Buick Roadmaster Estate wagon would be .33? Honda CRV .45?

Here is a good table http://www.mayfco.com/tbls.htm

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 Post subject:
PostPosted: Sun Jan 22, 2006 6:23 pm 
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TBI Slant 6
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Joined: Sun Oct 16, 2005 8:35 pm
Posts: 233
Location: Sioux Falls South Dakota
Car Model:
im confused on what you guys are talking about...huh :? :?:

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 Post subject:
PostPosted: Mon Jan 23, 2006 5:56 am 
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Turbo Slant 6

Joined: Tue Mar 11, 2003 11:47 am
Posts: 526
Location: Illinois
Car Model:
The simple explanation of their technical gobbledeguck is wind resistance.


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 Post subject:
PostPosted: Mon Jan 23, 2006 6:28 am 
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Turbo EFI
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Joined: Tue Feb 18, 2003 7:34 am
Posts: 2479
Location: Lubbock, Texas
Car Model: 1964 Plymouth Valiant V200 Sedan
At highway speeds, aerodynamic drag is a big factor in fuel economy. Yes, it's also often the limiting factor on top speed. You can estimate the power required to maintain a speed if you know the drag coefficient and make allowance for rolling resistance.
Of course, then you have to look at the actual torque/power curve of your engine, transmission and rear end gearing, etc. to see if you have the torque to accelerate to and the power to maintain that speed at those RPM's.
It's all to answer the question: "What'll she do?"

_________________
"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO


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