HP Adjustments on NHRA.com

[Andrew Hill]

Originally Posted by cutta

Surprisingly enough, the drag coefficient's of both cars are nearly the same. 0.32 and 0.33

Drag coefficient isn't the whole story, a fourth gen camaro has a drag coefficient of .34 and a new massive Dodge Durango is .33. You have to multiply drag coefficient by the frontal area to get the real numbers. Here are some numbers I found searching online (may not be 100% accurate, couldn't find a database with all of them).

1988 Camaro IROC Z-> Cd = 0.34, A = 21.00 ft^2, CdA = 7.14 ft^2
1988 Firebird Trans Am-> Cd = 0.31, A = 20.75, CdA = 6.43
1993-2002 Camaro-> Cd = 0.34, A = 22.00, CdA = 7.48
1993-2002 Firebird-> Cd = 0.34, A = 22.00, CdA = 7.48
1995-2005 Cavalier-> Cd = 0.38, A = 20.2, CdA = 7.24
1997 Sunfire-> Cd = 0.38, A = 22.2, CdA = 7.68
2005 Cobalt-> Cd = 0.324, A = 23.1, CdA = 6.90
2005 Stratus-> Cd = 0.33, A = 23.1, CdA = 7.03
C6 Corvette -> Cd = 0.286, A = 22.3, Cd = 6.38
C5 Corvette-> Cd = 0.29, A = 21.3, CdA = 6.18
2008-11 Challenger-> Cd = 0.35, A =25.3, CdA = 8.86