Shelby hood scoop
2nd Gear Member
Joined: Sep 2007
Posts: 490
From: Sandy, Utah
I did a combination of both. I cut a hole in the hood. I used the bolt on so it would be firm on the hood to help avoid cracking. Then I used short strand fiberglass to mold it to the hood. I think it came out great and have had people ask weather it was an all FG hood. The short strand is good stuff and very strong. Going on 2 years with no cracks and I drive the car all the time.
Check out my photo bucket links for pics. Bottom link, page 1,5,6,7 There are some "in process" and finished. I am out of town otherwise I would post one.
Jeff
Check out my photo bucket links for pics. Bottom link, page 1,5,6,7 There are some "in process" and finished. I am out of town otherwise I would post one.
Jeff
5th Gear Member
Joined: Sep 2006
Posts: 3,302
From: Northernish Eastish Central Texas
Some tips for installing a bolt on hood scoop.
Go to the hardware store and purchase a piece of 36"x36" piece of clear plexiglas. preferably as thin as possible. You will use this as your template.
1. Using a Sharpie, draw a centerline down the plexiglas
2. Run a strip of masking tape down the center underside of the scoop.
3. Measure side to side of the scope in multiple points down the scope and mark center points to develop a centerline of the scope. (don't measure between the studs, as they may not be symmetrical.
4. Connect the dots and draw a centerline down the scope
5. Lay the temple on top of the studs and visually align the two centerlines.
6. Mark the stud locations on the plexiglas.
7. Drill holes in the plexiglas for the 6 stud locations. Slightly larger than the studs
8. Test fit to see that the studs fit into the template holes and the scoop sits flush to the template
9. Using the sharpie, trace the outline of the scoop onto the template.
10. Run masking tape down the general center of the hood.
11. Measure the front, mid and back to determine the centerline; mark points
12. Using a straightedge, draw a line down the center of the hood.
13. Lay the template on the hood, lining up the centerlines of the plexiglas and the hood. generally mask the hood where the edges of the plexiglass touch to avoid scratches.
14. Determine the setback of the scoop. Line up the outline of the scoop to be 1.5" from the back edge of the hood (or where you choose it to be)
15. Tape the template down securely to the hood around the perimeter to hold it in place. It will flex slightly.
16. Place the scoop in the drilled holes and visually check everything for accuracy. The 6 studs should fit in the holes with all alignment marks together.
17. if good, drill the holes in the hood in the six locations shown on the template. Start with a small drill bit and step up to the final size. this will allow you to 'pull' a hole if needed.
18. Check all alignments between each drilling operation.
19. Be sure to put a tarp or some plastic under the hood to catch the shavings from falling into the engine bay. Drill with the hood raised slightly, so the drill bit won't punch through and strike part of the motor.
20. After all holes are drilled, remove all template and tape (except the hood centerline)
21. Retape the outline area on the hood where the scoop will touch the hood.
22. Test fit the hood scoop till it will slip in the holes easily and sit flush on the hood, and the alignment is correct..
23. You may have an issue with the front two holes striking a inner hood support. Use a dremel tool to cut away portion of the support to allow access for the underside nuts/washers.
Go to the hardware store and purchase a piece of 36"x36" piece of clear plexiglas. preferably as thin as possible. You will use this as your template.
1. Using a Sharpie, draw a centerline down the plexiglas
2. Run a strip of masking tape down the center underside of the scoop.
3. Measure side to side of the scope in multiple points down the scope and mark center points to develop a centerline of the scope. (don't measure between the studs, as they may not be symmetrical.
4. Connect the dots and draw a centerline down the scope
5. Lay the temple on top of the studs and visually align the two centerlines.
6. Mark the stud locations on the plexiglas.
7. Drill holes in the plexiglas for the 6 stud locations. Slightly larger than the studs
8. Test fit to see that the studs fit into the template holes and the scoop sits flush to the template
9. Using the sharpie, trace the outline of the scoop onto the template.
10. Run masking tape down the general center of the hood.
11. Measure the front, mid and back to determine the centerline; mark points
12. Using a straightedge, draw a line down the center of the hood.
13. Lay the template on the hood, lining up the centerlines of the plexiglas and the hood. generally mask the hood where the edges of the plexiglass touch to avoid scratches.
14. Determine the setback of the scoop. Line up the outline of the scoop to be 1.5" from the back edge of the hood (or where you choose it to be)
15. Tape the template down securely to the hood around the perimeter to hold it in place. It will flex slightly.
16. Place the scoop in the drilled holes and visually check everything for accuracy. The 6 studs should fit in the holes with all alignment marks together.
17. if good, drill the holes in the hood in the six locations shown on the template. Start with a small drill bit and step up to the final size. this will allow you to 'pull' a hole if needed.
18. Check all alignments between each drilling operation.
19. Be sure to put a tarp or some plastic under the hood to catch the shavings from falling into the engine bay. Drill with the hood raised slightly, so the drill bit won't punch through and strike part of the motor.
20. After all holes are drilled, remove all template and tape (except the hood centerline)
21. Retape the outline area on the hood where the scoop will touch the hood.
22. Test fit the hood scoop till it will slip in the holes easily and sit flush on the hood, and the alignment is correct..
23. You may have an issue with the front two holes striking a inner hood support. Use a dremel tool to cut away portion of the support to allow access for the underside nuts/washers.
5th Gear Member
Joined: Jan 2006
Posts: 3,946
From: Colorado
I just used stiff brown paper and stuck it down on the studs of the scoop. Then traced the outline of the scoop on the paper and cut it out. Took the brown paper and folded it in half to get my center line. Put the paper on the hood and layed the center line fold on the crown of the hood 1 1/2 inches from the back and then transfered the stud holes from the paper to the hood. Drilled the holes and that was it except for cutting the hole to make the scoop functional. Plainsman said it should be 2 inches from the back. It would have help if I used 2 inches then the studs would have worked better on the underside supports.
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