One of our Team Members, Brian Abshier, is restoring a Cale Yarborough Spoiler and purchased one of our reproduction wings for his car. Unfortunately, the restoration shop also “lost” his original hood and he had no idea where the hood scoop should go. To save on shipping and to look at how a scoop is mounted he decided to pay us a visit recently. That made me think that there may be more than one of you out there that wants to install a hood scoop but you’re not sure where the factory installed it. Since we have both a restored and an original Spoiler in our garage I decided to run some measurements and see how well they compare and they were square on with each other. I have included photos of both cars since there was one big difference.
Both cars have Ram Air but the hole in the hood is not the same. The original car has four holes with a cross in the middle. The restored car has had the cross removed. I am not absolutely sure which way is correct from the factory. I have seem many cars with the center cut out but have also seen plenty with the cross still in place. If I had to make a guess I would say the cross is factory and those that are cut out were gearheads looking for less air restriction into the carb. In addition, where the cross is removed on the restored car the cuts are very rough like they were made with a hack saw. Does anyone know for sure which way is correct?
The first step was to measure how the scoop fit onto the hood. Both cars had the same dimension from the rear of the scoop to the back edge of the hood.
There are 10 studs that screw into the hood scoop, the holes in the hood are 5/16″ in diameter. These studs and nuts are available from different sources and are well worth the reasonable price to do it right.
The most tedious step was getting the measurements for the location of each hole. You will note that our measurements are not always symmetrical to the center line of the hood. This caused me some real concern but then I measured the total distance between the holes on the scoop and they matched the total dimensions on the hood. The warning or the lesson here is to use these dimensions BUT ONLY AFTER YOU HAVE CONFIRMED THEM TO MATCH YOU SCOOP!
Here is a picture of the hood with each hole numbered and then below I have given you the dimensions for each hole from the back edge of the hood and from the center line of the hood.
ALL DIMENSIONS ARE IN INCHES
Hole Number From Back of Hood From Center of Hood
1 5 3/4″ 10″
2 5 5/8″ 3 5/16″
3 5 11/16″ 3 5/16″
4 5 3/4″ 10 1/8″
5 11 1/2″ 9 1/2″
6 11 1/2″ 9 5/8″
7 18 13/16″ 9 9/16″
8 18 13/16″ 9 5/8″
9 25 3/16″ 10″
10 25 3/16 10″
The following identification numbers were found on the underside of the scoop: