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how about the challenger and cuda ductails? were they functional or more for looks? The look similar to what the nascars use..

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Using the info done by the 1969 Car Life magazine test on an 69 Camaro (similiar sedan profile to E-body), YES at speeds 65 mph and above.

With rear spoiler onl, the test showed at 65 mph about 40 lbs of force downward was added to the rear end over the no spoilers test. And added about 100 lbs of force at 115 mph over the no spoilers test. But when the rear was pushed down, it actually pushed the front of the car more up and created even more front lift.

Front and rear 69 Camaro Spoiler reduced front lift a just little over the no spoiler test. The rear downforce was a little greater than with just rear spoiler only.

Interesting thing was the front spoiler only reduced 50 lbs of front lift at 65 mph and reduced 150 lbs at 115 mph! The rear force was not effected much at all over the no f/r spoilers test









This is the interesting test on the Camaro notchback coupe design that would apply to E-bodies, 66-70 B-bodies (not Charger), 67-76 Darts, 67-69 Notchback Barracudas...