Base 69 Firebird 400 HO was 3455# wheras a mandated optioned 69 Trans am was 3700#.
That equals almost 3/10 of a second.
If comparing that across the board, weights versus available power and the same trans/rear, I am hard pressed to believe that in a 1/4 mile the aerodynamics would have any appreciable effect other than aesthetic.
Remember that the 69 HO 69 HO with 611 and the 69 T/A RAIII all had the same powerplant.
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.
