Quote:
Originally Posted by aerohead
CAR and DRIVER experimented with airdams and spoilers on a Ford Pinto,a Dodge Van, and a Datsun 240-Z.
A wrap-around airdam would help keep air from under the Chevelle,cutting drag and front lift (my '67 El Camino was terrifying at an indicated 120-mph!)
A rear spoiler,tilted up at no more than 30-degrees above horizontal,just touching the 'template's' imaginary contour might be a good first approximation.Theoretically,a straight- back foil, ala NHRA/Bonneville,would be lower drag,but it would have to be 'soft' like the rubber-edged Porsche 911 Carrera 'whale-tail' employed, to protect pedestrians.
Rocker panel extensions like on the Trans AM Firebird, even with the bottom of your airdam would help.
Forget the splitter.It will only create drag.
An electric cooling fan if you don't already have one. Keep the fan shroud.
Block all the grille except for the actual perimeter footprint of the radiator.
The headlight recesses could be covered with Plex/Lexan.
MOON covers are a known drag reducer.
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On further examination, I can’t possibly reach the line with a spoiler. It would be like 8” tall @ 30 degrees or @ 12”+ if straight back.
Would a partial spoiler help at all?
I may add some side skirting but not to the bottom of the front air dam.
I do run an electric fan and the grill opening is already smaller than the face of the radiator. I may reduce this some because the face is designed for a big block and I’m running a 217 cubic inch V6.
Moon covers while efficient are not in the cards. I dont have a way to attach them to my wheels.